diff --git a/ruby/lib/jam_ruby.rb b/ruby/lib/jam_ruby.rb
index de12d03e1..2b6ffcd7d 100755
--- a/ruby/lib/jam_ruby.rb
+++ b/ruby/lib/jam_ruby.rb
@@ -24,7 +24,7 @@ require 'csv'
 require "jam_ruby/constants/limits"
 require "jam_ruby/constants/notification_types"
 require "jam_ruby/constants/validation_messages"
-require "jam_ruby/errors/permission_error"
+require "jam_ruby/errors/jam_permission_error"
 require "jam_ruby/errors/state_error"
 require "jam_ruby/errors/jam_argument_error"
 require "jam_ruby/errors/conflict_error"
diff --git a/ruby/lib/jam_ruby/errors/jam_permission_error.rb b/ruby/lib/jam_ruby/errors/jam_permission_error.rb
new file mode 100644
index 000000000..531791df1
--- /dev/null
+++ b/ruby/lib/jam_ruby/errors/jam_permission_error.rb
@@ -0,0 +1,5 @@
+module JamRuby
+  class JamPermissionError < Exception
+
+  end
+end
\ No newline at end of file
diff --git a/ruby/lib/jam_ruby/errors/permission_error.rb b/ruby/lib/jam_ruby/errors/permission_error.rb
deleted file mode 100644
index f0b4e3a2f..000000000
--- a/ruby/lib/jam_ruby/errors/permission_error.rb
+++ /dev/null
@@ -1,5 +0,0 @@
-module JamRuby
-  class PermissionError < Exception
-
-  end
-end
\ No newline at end of file
diff --git a/ruby/lib/jam_ruby/models/band.rb b/ruby/lib/jam_ruby/models/band.rb
index cfd554d2b..b4232553f 100644
--- a/ruby/lib/jam_ruby/models/band.rb
+++ b/ruby/lib/jam_ruby/models/band.rb
@@ -163,14 +163,14 @@ module JamRuby
 
       # ensure person creating this Band is a Musician
       unless user.musician?
-        raise PermissionError, "must be a musician"
+        raise JamPermissionError, "must be a musician"
       end
 
       band = id.blank? ? Band.new : Band.find(id)
 
       # ensure user updating Band details is a Band member
       unless band.new_record? || band.users.exists?(user)
-        raise PermissionError, ValidationMessages::USER_NOT_BAND_MEMBER_VALIDATION_ERROR
+        raise JamPermissionError, ValidationMessages::USER_NOT_BAND_MEMBER_VALIDATION_ERROR
       end
 
       band.name = params[:name] if params.has_key?(:name)
diff --git a/ruby/lib/jam_ruby/models/claimed_recording.rb b/ruby/lib/jam_ruby/models/claimed_recording.rb
index 88898cb89..18dd11898 100644
--- a/ruby/lib/jam_ruby/models/claimed_recording.rb
+++ b/ruby/lib/jam_ruby/models/claimed_recording.rb
@@ -40,7 +40,7 @@ module JamRuby
     # params is a hash, and everything is optional
     def update_fields(user, params)
       if user != self.user
-        raise PermissionError, "user doesn't own claimed_recording"
+        raise JamPermissionError, "user doesn't own claimed_recording"
       end
 
       self.name = params[:name]
@@ -52,7 +52,7 @@ module JamRuby
 
     def discard(user)
       if user != self.user
-        raise PermissionError, "user doesn't own claimed_recording"
+        raise JamPermissionError, "user doesn't own claimed_recording"
       end
 
       ClaimedRecording.where(:id => id).update_all(:discarded => true )
@@ -95,11 +95,11 @@ module JamRuby
 
       target_user = params[:user]
 
-      raise PermissionError, "must specify current user" unless user
+      raise JamPermissionError, "must specify current user" unless user
       raise "user must be specified" unless target_user
 
       if target_user != user.id
-        raise PermissionError, "unable to view another user's favorites"
+        raise JamPermissionError, "unable to view another user's favorites"
       end
 
       query = ClaimedRecording.limit(limit).order('created_at DESC').offset(start)
diff --git a/ruby/lib/jam_ruby/models/recording.rb b/ruby/lib/jam_ruby/models/recording.rb
index b7c683747..016bc788d 100644
--- a/ruby/lib/jam_ruby/models/recording.rb
+++ b/ruby/lib/jam_ruby/models/recording.rb
@@ -183,14 +183,14 @@ module JamRuby
 
     def recorded_tracks_for_user(user)
       unless self.users.exists?(user)
-        raise PermissionError, "user was not in this session"
+        raise JamPermissionError, "user was not in this session"
       end
       recorded_tracks.where(:user_id => user.id)
     end
 
     def recorded_backing_tracks_for_user(user)
       unless self.users.exists?(user)
-        raise PermissionError, "user was not in this session"
+        raise JamPermissionError, "user was not in this session"
       end
       recorded_backing_tracks.where(:user_id => user.id)
     end
@@ -265,7 +265,7 @@ module JamRuby
     def claim(user, name, description, genre, is_public, upload_to_youtube=false)
       upload_to_youtube = !!upload_to_youtube # Correct where nil is borking save
       unless self.users.exists?(user)
-        raise PermissionError, "user was not in this session"
+        raise JamPermissionError, "user was not in this session"
       end
 
       claimed_recording = ClaimedRecording.new 
@@ -718,19 +718,19 @@ module JamRuby
     private
     def self.validate_user_is_band_member(user, band)
       unless band.users.exists? user
-        raise PermissionError, ValidationMessages::USER_NOT_BAND_MEMBER_VALIDATION_ERROR
+        raise JamPermissionError, ValidationMessages::USER_NOT_BAND_MEMBER_VALIDATION_ERROR
       end
     end
 
     def self.validate_user_is_creator(user, creator)
       unless user.id == creator.id
-        raise PermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR
+        raise JamPermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR
       end
     end
 
     def self.validate_user_is_musician(user)
       unless user.musician?
-        raise PermissionError, ValidationMessages::USER_NOT_MUSICIAN_VALIDATION_ERROR
+        raise JamPermissionError, ValidationMessages::USER_NOT_MUSICIAN_VALIDATION_ERROR
       end
     end
 
diff --git a/ruby/lib/jam_ruby/models/rsvp_request.rb b/ruby/lib/jam_ruby/models/rsvp_request.rb
index 9f233b973..f416640bf 100644
--- a/ruby/lib/jam_ruby/models/rsvp_request.rb
+++ b/ruby/lib/jam_ruby/models/rsvp_request.rb
@@ -62,7 +62,7 @@ module JamRuby
       invitation = Invitation.where("music_session_id = ? AND receiver_id = ?", music_session.id, user.id)
 
       if invitation.first.nil? && !music_session.open_rsvps && music_session.creator.id != user.id
-        raise PermissionError, "Only a session invitee can create an RSVP for this session." 
+        raise JamPermissionError, "Only a session invitee can create an RSVP for this session."
       end
 
       RsvpRequest.transaction do
@@ -154,7 +154,7 @@ module JamRuby
 
       # authorize the user attempting to respond to the RSVP request
       if music_session.creator.id != user.id
-        raise PermissionError, "Only the session organizer can accept or decline an RSVP request." 
+        raise JamPermissionError, "Only the session organizer can accept or decline an RSVP request."
       end
 
       rsvp_request = RsvpRequest.find_by_id(rsvp_request_id)
@@ -249,7 +249,7 @@ module JamRuby
       rsvp_request = RsvpRequest.find(params[:id])
 
       if music_session.creator.id != user.id && rsvp_request.user_id != user.id
-        raise PermissionError, "Only the session organizer or RSVP creator can cancel the RSVP."
+        raise JamPermissionError, "Only the session organizer or RSVP creator can cancel the RSVP."
       end
 
       RsvpRequest.transaction do
diff --git a/ruby/lib/jam_ruby/models/user.rb b/ruby/lib/jam_ruby/models/user.rb
index 7fcd95a7b..7ca9e8bec 100644
--- a/ruby/lib/jam_ruby/models/user.rb
+++ b/ruby/lib/jam_ruby/models/user.rb
@@ -775,7 +775,7 @@ module JamRuby
       end
 
       if user.id != updater_id
-        raise PermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR
+        raise JamPermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR
       end 
 
       user.easy_save(first_name, last_name, email, password, password_confirmation, musician, gender,
diff --git a/ruby/lib/jam_ruby/mq_router.rb b/ruby/lib/jam_ruby/mq_router.rb
index 826eb1ace..8aec53cde 100644
--- a/ruby/lib/jam_ruby/mq_router.rb
+++ b/ruby/lib/jam_ruby/mq_router.rb
@@ -17,7 +17,7 @@ class MQRouter
     end
 
     if !music_session.access? user
-      raise PermissionError, 'not allowed to join the specified session'
+      raise JamPermissionError, 'not allowed to join the specified session'
     end
 
     return music_session
diff --git a/ruby/spec/jam_ruby/models/rsvp_request_spec.rb b/ruby/spec/jam_ruby/models/rsvp_request_spec.rb
index 0f8aa5874..f93501647 100644
--- a/ruby/spec/jam_ruby/models/rsvp_request_spec.rb
+++ b/ruby/spec/jam_ruby/models/rsvp_request_spec.rb
@@ -104,7 +104,7 @@ describe RsvpRequest do
     it "should not allow non-invitee to RSVP to session with closed RSVPs" do
       @music_session.open_rsvps = false
       @music_session.save!
-      expect {RsvpRequest.create({:session_id => @music_session.id, :rsvp_slots => [@slot1.id, @slot2.id]}, @non_session_invitee)}.to raise_error(JamRuby::PermissionError)
+      expect {RsvpRequest.create({:session_id => @music_session.id, :rsvp_slots => [@slot1.id, @slot2.id]}, @non_session_invitee)}.to raise_error(JamRuby::JamPermissionError)
     end
 
     it "should allow RSVP creation with autoapprove option for open RSVP sessions" do
@@ -216,7 +216,7 @@ describe RsvpRequest do
       # attempt to approve with non-organizer
       rs1 = RsvpRequestRsvpSlot.find_by_rsvp_slot_id(@slot1.id)
       rs2 = RsvpRequestRsvpSlot.find_by_rsvp_slot_id(@slot2.id)
-      expect {RsvpRequest.update({:id => rsvp.id, :session_id => @music_session.id, :rsvp_responses => [{:request_slot_id => rs1.id, :accept => true}, {:request_slot_id => rs2.id, :accept => true}]}, @session_invitee)}.to raise_error(PermissionError)
+      expect {RsvpRequest.update({:id => rsvp.id, :session_id => @music_session.id, :rsvp_responses => [{:request_slot_id => rs1.id, :accept => true}, {:request_slot_id => rs2.id, :accept => true}]}, @session_invitee)}.to raise_error(JamPermissionError)
 
       # approve with organizer
       rs1 = RsvpRequestRsvpSlot.find_by_rsvp_slot_id(@slot1.id)
@@ -402,7 +402,7 @@ describe RsvpRequest do
       comment.comment.should == "Let's Jam!"
 
       # cancel
-      expect {RsvpRequest.cancel({:id => rsvp.id, :session_id => @music_session.id, :cancelled => "all", :message => "I'm gonna cancel all your RSVPs"}, user)}.to raise_error(PermissionError)
+      expect {RsvpRequest.cancel({:id => rsvp.id, :session_id => @music_session.id, :cancelled => "all", :message => "I'm gonna cancel all your RSVPs"}, user)}.to raise_error(JamPermissionError)
     end
   end
 
diff --git a/web/app/controllers/api_backing_tracks_controller.rb b/web/app/controllers/api_backing_tracks_controller.rb
index 9ed591422..c9135cf97 100644
--- a/web/app/controllers/api_backing_tracks_controller.rb
+++ b/web/app/controllers/api_backing_tracks_controller.rb
@@ -26,7 +26,7 @@ class ApiBackingTracksController < ApiController
 
   def lookup_recorded_backing_track
     @recorded_backing_track = RecordedBackingTrack.find_by_recording_id_and_client_track_id!(params[:id], params[:track_id])
-    raise PermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR unless @recorded_backing_track.recording.has_access?(current_user)
+    raise JamPermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR unless @recorded_backing_track.recording.has_access?(current_user)
   end
 
 end # class ApiBackingTracksController
diff --git a/web/app/controllers/api_bands_controller.rb b/web/app/controllers/api_bands_controller.rb
index cd800aa61..8b0c83ccd 100644
--- a/web/app/controllers/api_bands_controller.rb
+++ b/web/app/controllers/api_bands_controller.rb
@@ -250,14 +250,14 @@ class ApiBandsController < ApiController
     def auth_band_member
       @band = Band.find(params[:id])
       unless @band.users.exists? current_user
-        raise PermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR
+        raise JamPermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR
       end
     end
     def auth_band_admin
       uid = current_user.id
       @band = Band.find(params[:id])
       unless @band.band_musicians.detect { |bm| bm.user_id == uid && bm.admin? }
-        raise PermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR
+        raise JamPermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR
       end
     end
 end
diff --git a/web/app/controllers/api_chats_controller.rb b/web/app/controllers/api_chats_controller.rb
index 4a58fd164..70988b845 100644
--- a/web/app/controllers/api_chats_controller.rb
+++ b/web/app/controllers/api_chats_controller.rb
@@ -31,7 +31,7 @@ class ApiChatsController < ApiController
     end
 
     unless @music_session.access? current_user
-      raise PermissionError, 'not allowed to join the specified session'
+      raise JamPermissionError, 'not allowed to join the specified session'
     end
   end
 
diff --git a/web/app/controllers/api_claimed_recordings_controller.rb b/web/app/controllers/api_claimed_recordings_controller.rb
index 60acb0eb4..943a950de 100644
--- a/web/app/controllers/api_claimed_recordings_controller.rb
+++ b/web/app/controllers/api_claimed_recordings_controller.rb
@@ -12,13 +12,13 @@ class ApiClaimedRecordingsController < ApiController
 
   def show
     if !@claimed_recording.is_public && @claimed_recording.user_id != current_user.id
-      raise PermissionError, 'this claimed recording is not public'
+      raise JamPermissionError, 'this claimed recording is not public'
     end
   end
   
   def update
     if @claimed_recording.user_id != current_user.id
-      raise PermissionError, 'only owner of claimed_recording can update it'
+      raise JamPermissionError, 'only owner of claimed_recording can update it'
     end
 
     @claimed_recording.update_fields(current_user, params)
@@ -27,7 +27,7 @@ class ApiClaimedRecordingsController < ApiController
   
   def delete
     if @claimed_recording.user_id != current_user.id
-      raise PermissionError, 'only owner of claimed_recording can update it'
+      raise JamPermissionError, 'only owner of claimed_recording can update it'
     end
     @claimed_recording.discard(current_user)
     respond_with @claimed_recording
@@ -35,7 +35,7 @@ class ApiClaimedRecordingsController < ApiController
 
   def download
     if !@claimed_recording.is_public && @claimed_recording.user_id != current_user.id
-      raise PermissionError, 'this claimed recording is not public'
+      raise JamPermissionError, 'this claimed recording is not public'
     end
 
     params[:type] ||= 'ogg'
diff --git a/web/app/controllers/api_controller.rb b/web/app/controllers/api_controller.rb
index c42f138b1..ce17dbd9c 100644
--- a/web/app/controllers/api_controller.rb
+++ b/web/app/controllers/api_controller.rb
@@ -15,7 +15,7 @@ class ApiController < ApplicationController
     @exception = exception
     render "errors/jam_argument_error", :status => 422
   end
-  rescue_from 'JamRuby::PermissionError' do |exception|
+  rescue_from 'JamRuby::JamPermissionError' do |exception|
     @exception = exception
     render "errors/permission_error", :status => 403
   end
@@ -57,7 +57,7 @@ class ApiController < ApplicationController
 
     def auth_user
       unless current_user.id == params[:id]
-        raise PermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR
+        raise JamPermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR
       end
       
       @user = User.find(params[:id])
diff --git a/web/app/controllers/api_invitations_controller.rb b/web/app/controllers/api_invitations_controller.rb
index b1c91ddb5..b916da143 100644
--- a/web/app/controllers/api_invitations_controller.rb
+++ b/web/app/controllers/api_invitations_controller.rb
@@ -12,7 +12,7 @@ class ApiInvitationsController < ApiController
 
     if !sender_id.nil?
       if current_user.id != sender_id
-        raise PermissionError, "You can only ask for your own sent invitations"
+        raise JamPermissionError, "You can only ask for your own sent invitations"
       end
       if session_id = params[:session_id]
         @invitations = Invitation.where(:sender_id => sender_id, :music_session_id => session_id).uniq_by { |i| i.receiver_id }
@@ -21,7 +21,7 @@ class ApiInvitationsController < ApiController
       end
     elsif !receiver_id.nil?
       if current_user.id != receiver_id
-        raise PermissionError, "You can only ask for your own received invitations"
+        raise JamPermissionError, "You can only ask for your own received invitations"
       end
 
       @invitations = Invitation.where(:receiver_id => current_user.id).uniq_by { |i| i.receiver_id }
diff --git a/web/app/controllers/api_jam_tracks_controller.rb b/web/app/controllers/api_jam_tracks_controller.rb
index 2f7a9c859..eb6c0c4f1 100644
--- a/web/app/controllers/api_jam_tracks_controller.rb
+++ b/web/app/controllers/api_jam_tracks_controller.rb
@@ -108,7 +108,7 @@ class ApiJamTracksController < ApiController
 private
   def lookup_jam_track_right
     @jam_track_right = JamTrackRight.where("jam_track_id=? AND user_id=?", params[:id], current_user.id).first
-    raise PermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR unless @jam_track_right
+    raise JamPermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR unless @jam_track_right
   end
 
 end # class ApiJamTracksController
diff --git a/web/app/controllers/api_mixes_controller.rb b/web/app/controllers/api_mixes_controller.rb
index 2ec820a7a..af1f9e382 100644
--- a/web/app/controllers/api_mixes_controller.rb
+++ b/web/app/controllers/api_mixes_controller.rb
@@ -24,7 +24,7 @@ class ApiMixesController < ApiController
 
   def download
     @mix = Mix.find(params[:id])
-    raise PermissionError, "You can only download a mix you have claimed" unless @mix.can_download? current_user
+    raise JamPermissionError, "You can only download a mix you have claimed" unless @mix.can_download? current_user
 
     @mix.current_user = current_user
     @mix.update_download_count
diff --git a/web/app/controllers/api_music_sessions_controller.rb b/web/app/controllers/api_music_sessions_controller.rb
index 6fb5df5cf..9f43e909e 100644
--- a/web/app/controllers/api_music_sessions_controller.rb
+++ b/web/app/controllers/api_music_sessions_controller.rb
@@ -574,13 +574,13 @@ class ApiMusicSessionsController < ApiController
 
   def jam_track_open
     unless @music_session.users.exists?(current_user)
-      raise PermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR
+      raise JamPermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR
     end
 
     @jam_track = JamTrack.find(params[:jam_track_id])
 
     unless @jam_track.right_for_user(current_user)
-      raise PermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR
+      raise JamPermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR
     end
 
     @music_session.open_jam_track(current_user, @jam_track)
@@ -590,7 +590,7 @@ class ApiMusicSessionsController < ApiController
 
   def jam_track_close
     unless @music_session.users.exists?(current_user)
-      raise PermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR
+      raise JamPermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR
     end
 
     @music_session.close_jam_track
@@ -600,7 +600,7 @@ class ApiMusicSessionsController < ApiController
 
   def backing_track_open
     unless @music_session.users.exists?(current_user)
-      raise PermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR
+      raise JamPermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR
     end
 
     @backing_track_path = params[:backing_track_path]    
@@ -610,7 +610,7 @@ class ApiMusicSessionsController < ApiController
 
   def backing_track_close
     unless @music_session.users.exists?(current_user)
-      raise PermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR
+      raise JamPermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR
     end
 
     @music_session.close_backing_track()
@@ -619,7 +619,7 @@ class ApiMusicSessionsController < ApiController
 
   def metronome_open
     unless @music_session.users.exists?(current_user)
-      raise PermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR
+      raise JamPermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR
     end
 
     @music_session.open_metronome(current_user)
@@ -628,7 +628,7 @@ class ApiMusicSessionsController < ApiController
 
   def metronome_close
     unless @music_session.users.exists?(current_user)
-      raise PermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR
+      raise JamPermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR
     end
 
     @music_session.close_metronome()
diff --git a/web/app/controllers/api_recordings_controller.rb b/web/app/controllers/api_recordings_controller.rb
index 27eb6c856..b4012be5d 100644
--- a/web/app/controllers/api_recordings_controller.rb
+++ b/web/app/controllers/api_recordings_controller.rb
@@ -49,7 +49,7 @@ class ApiRecordingsController < ApiController
   end
 
   def download # track
-    raise PermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR unless @recorded_track.can_download?(current_user)
+    raise JamPermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR unless @recorded_track.can_download?(current_user)
 
     @recorded_track.current_user = current_user
     @recorded_track.update_download_count
@@ -64,7 +64,7 @@ class ApiRecordingsController < ApiController
   end
 
   def backing_track_download
-    raise PermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR unless @recorded_backing_track.can_download?(current_user)
+    raise JamPermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR unless @recorded_backing_track.can_download?(current_user)
 
     @recorded_backing_track.current_user = current_user
     @recorded_backing_track.update_download_count
@@ -81,7 +81,7 @@ class ApiRecordingsController < ApiController
   def start
     music_session = ActiveMusicSession.find(params[:music_session_id])
 
-    raise PermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR unless music_session.users.exists?(current_user)
+    raise JamPermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR unless music_session.users.exists?(current_user)
 
     @recording = Recording.start(music_session, current_user)
 
@@ -388,27 +388,27 @@ class ApiRecordingsController < ApiController
 
   def lookup_recording
     @recording = Recording.find(params[:id])
-    raise PermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR unless @recording.has_access?(current_user)
+    raise JamPermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR unless @recording.has_access?(current_user)
   end
 
   def lookup_recorded_track
     @recorded_track = RecordedTrack.find_by_recording_id_and_client_track_id!(params[:id], params[:track_id])
-    raise PermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR unless @recorded_track.recording.has_access?(current_user)
+    raise JamPermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR unless @recorded_track.recording.has_access?(current_user)
   end
 
   def lookup_recorded_backing_track
     @recorded_backing_track = RecordedBackingTrack.find_by_recording_id_and_client_track_id!(params[:id], params[:track_id])
-    raise PermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR unless @recorded_backing_track.recording.has_access?(current_user)
+    raise JamPermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR unless @recorded_backing_track.recording.has_access?(current_user)
   end
 
   def lookup_stream_mix
     @quick_mix = QuickMix.find_by_recording_id_and_user_id!(params[:id], current_user.id)
-    raise PermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR unless @quick_mix.recording.has_access?(current_user)
+    raise JamPermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR unless @quick_mix.recording.has_access?(current_user)
   end
 
   def lookup_recorded_video
     @recorded_video = RecordedVideo.find_by_recording_id_and_client_video_source_id!(params[:id], params[:video_id])
-    raise PermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR unless @recorded_video.recording.has_access?(current_user)
+    raise JamPermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR unless @recorded_video.recording.has_access?(current_user)
   end
 
 end # class
diff --git a/web/app/controllers/api_twitters_controller.rb b/web/app/controllers/api_twitters_controller.rb
index b75fc8bd2..a56ebc660 100644
--- a/web/app/controllers/api_twitters_controller.rb
+++ b/web/app/controllers/api_twitters_controller.rb
@@ -20,7 +20,7 @@ class ApiTwittersController < ApiController
 
     twitter_auth = current_user.user_authorization('twitter')
 
-    raise JamRuby::PermissionError unless twitter_auth
+    raise JamRuby::JamPermissionError unless twitter_auth
 
     client = Twitter::REST::Client.new do |config|
       config.consumer_key        = Rails.application.config.twitter_app_id
diff --git a/web/app/controllers/api_users_controller.rb b/web/app/controllers/api_users_controller.rb
index 8065a504d..58a3a8de1 100644
--- a/web/app/controllers/api_users_controller.rb
+++ b/web/app/controllers/api_users_controller.rb
@@ -273,7 +273,7 @@ class ApiUsersController < ApiController
 
   def friend_request_show
     @friend_request = FriendRequest.find(params[:friend_request_id])
-    raise JamRuby::PermissionError, 'not allowed to view someone else\'s friend request' if @friend_request.friend_id != @user.id && @friend_request.user_id != @user.id
+    raise JamRuby::JamPermissionError, 'not allowed to view someone else\'s friend request' if @friend_request.friend_id != @user.id && @friend_request.user_id != @user.id
 
     respond_with @friend_request, responder: ApiResponder, :status => 200
   end
diff --git a/web/app/controllers/spikes_controller.rb b/web/app/controllers/spikes_controller.rb
index 6807ef6bd..52573388b 100644
--- a/web/app/controllers/spikes_controller.rb
+++ b/web/app/controllers/spikes_controller.rb
@@ -14,7 +14,7 @@ class SpikesController < ApplicationController
   def listen_in
 
     if !current_user.admin
-      raise PermissionError "must be administrator"
+      raise JamPermissionError "must be administrator"
     end
 
     #as_musician = false is the critical search criteria for sessions to list correctly
diff --git a/web/config/routes.rb b/web/config/routes.rb
index 2a59da25f..6836b0092 100644
--- a/web/config/routes.rb
+++ b/web/config/routes.rb
@@ -563,5 +563,4 @@ SampleApp::Application.routes.draw do
     match '/signup_hints' => 'api_signup_hints#create', :via => :post
     match '/signup_hints/:id' => 'api_signup_hints#show', :via => :get, :as => :api_signup_hint_detail
   end
-
 end
diff --git a/web/lib/music_session_manager.rb b/web/lib/music_session_manager.rb
index ac10e6d20..792fe1200 100644
--- a/web/lib/music_session_manager.rb
+++ b/web/lib/music_session_manager.rb
@@ -124,7 +124,7 @@ class MusicSessionManager < BaseManager
   def participant_delete(user, connection, active_music_session)
     
     if connection.user.id != user.id
-      raise PermissionError, "you do not own this connection"
+      raise JamPermissionError, "you do not own this connection"
     end
 
     recordingId = nil
diff --git a/web/lib/user_manager.rb b/web/lib/user_manager.rb
index 75ce77b07..b94c1c1c8 100644
--- a/web/lib/user_manager.rb
+++ b/web/lib/user_manager.rb
@@ -36,7 +36,7 @@ class UserManager < BaseManager
 
     # check if we have disabled open signup for this site.   open == invited users can still get in
     if !SampleApp::Application.config.signup_enabled  && invited_user.nil?
-      raise PermissionError, "Signups are currently disabled"
+      raise JamPermissionError, "Signups are currently disabled"
     end
 
     loc = GeoIpLocations.lookup(remote_ip)
diff --git a/websocket-gateway/lib/jam_websockets/router.rb b/websocket-gateway/lib/jam_websockets/router.rb
index c68de654a..4d79c3647 100644
--- a/websocket-gateway/lib/jam_websockets/router.rb
+++ b/websocket-gateway/lib/jam_websockets/router.rb
@@ -348,7 +348,7 @@ module JamWebsockets
         ensure
           cleanup_client(client)
         end
-      rescue PermissionError => e
+      rescue JamPermissionError => e
         @log.info "permission error.  reason=#{e.to_s}"
         @log.info e
 
@@ -971,7 +971,7 @@ module JamWebsockets
       client_connection = Connection.find_by_client_id(client_id)
 
       if client_connection.nil?
-        raise PermissionError, 'specified client not found'
+        raise JamPermissionError, 'specified client not found'
       end
 
       if !client_connection.access_p2p? user