Build app with Xcode 4 - it always show some error about PNG image

Question

When I build my app with Xcode 4 it always show this error message:

CopyPNGFile /Users/michaelchen/Library/Developer/Xcode/DerivedData/iMusicBox-boeawugacmha         


        

Answer 1

I had the same problem. I resolved it removing the duplicate pictures. Check out in different folders. That was my problem.