Alright – here’s the deal, after the cumulative update of Lion (10.7.3) the Application Loader is broken.
Perfectly good Icon.png which is actually 57 by 57 pixels in size gets rejected during the validation process from within Xcode before submitting to the App Store. At present there’s quick way around this issue (just tested it and it works perfectly for me).
Download the latest Application Loader from here and install the application.
Then just restart Xcode, clean and archive again. It should be clean and no warnings this time.The post was originally published on the following URL: http://www.touch-code-magazine.com/icon-dimensions-dont-meet-size-requirements-icon-png-is-0x0-must-be-57x57/