I have an application running successfully on Xcode 4.2 iOS 5.1, when i updated to Xcode 4.5 to make the application compatible with iOS 6, when i run the application it gives an error
Apple Mach-O linker error: no such file or directory: '/Users/User/Library/Developer/Xcode/DerivedData/Build/Products/Debug-iphonesimulator/RestKit/RestKit'
Note that i have moved the whole project from a Mac that was running xcode 4.2 into another Mac running Xcode 4.5
Thanks in advance