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

May be help you. Check Alpha Channel property as shown in attached screenshot. It should be YES if its NO.

Answer 2

I had to remove png files and then go to Targets -> AppName -> Build Phases -> Bundle Resources and remove the files from there too.

Answer 3

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

Answer 4

I had to remove the references to PNGs and add them to the project again. Anyone has a better solution?

Answer 5

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.

Answer 6

I solved this error, it's appear when you rename the images after put into the project, so for solve this problema first should delete the current images, rename files from finder and later copy this images into the project.