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

Error:

While reading /Volumes/Mac OS/RDC/Workpot/RestApp/RestApp/default1024_768.png pngcrush caught libpng error: Not a PNG file..

Solution:

1. I have opened "default1024_768" file in PaintBrush tool and saveAs PNG file with same name.
2. Replaced the Icon file in Xcode project.
3. Clean --> Build

That's All its work like charm

Hope this will help someone.