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

This error happens because you have an image in resources that's smaller than 5 pixels in width or height and you are trying to resize that image. Set all images to minimum of 5 pixels and error disappears.