Apple App Upload Icon Validation Error

Question

I'm uploading a free app to the Mac App Store and I keep getting this error during validation that says,

The application bundle does not contain an icon in ICNS format, containing both a 512x512 and a 512x512@2x image. For further assistance, see the Apple Human Interface Guidelines.

The only thing is, there are files called icon_512x512.png and [email protected], as well as files for all the other necessary resolutions.

Since Apple is absolutely no help, I was hoping someone would know how to fix this or at least go about creating an icon that meets the specifications.

Answer 1

As I understand it, if you create the .icns in Icon Composer it will fail validation even if a proper 512x512@2x is present. Use iconutil to convert the .icns back into an iconset, and then use iconutil to create a new .icns from the iconset.

For instance:

resources $ iconutil -c iconset icon.icns
resources $ iconutil -c icns icon.iconset

More info on iconutil is here.

Answer 2

That fixed my problem but I used cd to go to the folder, then I entered

iconutil -c iconset icon.icns
iconutil -c icns icon.iconset

the icon name must be icon as in the command.