If you add a ttf font file to the resources that has an ampersand in the font name (the font name as specified in the ttf definition, not the filename - although that crashes as well) then the simulator will refuse to install the application.
The following error is produced
$ rake simulator
Build ./build/iPhoneSimulator-6.1-Development
Build /Users/donaldhutchison/.rvm/gems/ruby-1.9.3-p327/gems/joybox-1.0.0/vendor/vendor-ios/cocos_2d
Build /Users/donaldhutchison/.rvm/gems/ruby-1.9.3-p327/gems/joybox-1.0.0/vendor/vendor-ios/box_2d
Compile ./app/scenes/menu_scene.rb
Link ./build/iPhoneSimulator-6.1-Development/circle-jerk.app/circle-jerk
Create ./build/iPhoneSimulator-6.1-Development/circle-jerk.dSYM
Simulate ./build/iPhoneSimulator-6.1-Development/circle-jerk.app
*\ simulator session started with error: Error Domain=DTiPhoneSimulatorErrorDomain Code=1 "iOS Simulator failed to install the application." UserInfo=0x102001820 {NSLocalizedDescription=iOS Simulator failed to install the application., DTiPhoneSimulatorUnderlyingErrorCodeKey=-1}
rake aborted!
Command failed with status (1): [DYLD_FRAMEWORK_PATH="/Applications/Xcode.a...]
If you add a ttf font file to the resources that has an ampersand in the font name (the font name as specified in the ttf definition, not the filename - although that crashes as well) then the simulator will refuse to install the application.
The following error is produced
Here's a font with that infernal symbol for the sake of testing http://www.dafont.com/c-c-red-alert-inet.font