[error] While reading *** pngcrush caught libpng error: **** emitted errors but did not return a nonzero exit code to indicate failure

“While reading *** pngcrush caught libpng error:  **** emitted errors but did not return a nonzero exit code to indicate failure”

If you use images which are interlaced, this error happen.
How to fix.

So without interlaced images when you compile.  Xcode will be silent :)

We hope this article help you :)