I had a working Mac application until I updated to XCode 4.4 and Mountain Lion. Now the application still compiles, but when I try to run it I get an error message.
error: failed to launch '/Users/username/James/mac/Browser/trunk/Browser/DerivedData/Browser/Build/Products/Debug/Browser.app/Contents/MacOS/Browser' -- Permission denied*
Can anybody explain why I might be getting this?