I have now extracted the files in the .ipa for an earlier build that succeeded and for the build that failed and compared the checksums of the icon file in the .ipa and they are identical in both .ipa archives so I think this is a false positive with Apple's backend.

I just got this error too even though 1) our app icons haven't changed for a long time and many previous builds have been accepted with the same icon set 2) they all render fine in Xcode and 3) I checked the icon locally and the PNG file renders fine. This is the error message in my case: ITMS-90013: Corrupt Image File - The image file 'AppIcon60x60[@]2x.png' appears to be corrupt. I reached out to Apple to see if they have a problem with their backend. Note I enclosed the @ symbol with square brackets so the forum allows me to post this message.

I have tried all of these suggestions and none of them work for me; including everything that Wizfinger tried. It seems impossible to get this working for an existing application. I have tried simultaneously changing the bundle identifier, container id and build number and deploying that to the app store then installing via testflight. Nothing works, could really use some help here as it is critical for my app to be able to export files. Any help much appreciated!

Yep, same problem here. None of the solutions worked for me so far, bumping Build Version, uninstalling, rebooting. Nothing will get the documents to appear in Finder/Files although I can see them listed in "Mobile Documents/iCloud.container". Sad state of affairs Apple, please fix this.

I know this is a very old thread but I am having the same problem verifying my identity using "Developer.app" - it does not accept my UK passport. I have contacted support and sent my passport photo to verify my identity and have received a reply but apparently it will take an "indeterminate amount of time". Anybody have any ideas how to expedite this? I am not in the US so those phone numbers won't help me. Until I can verify my identity all my MacOS and iOS development is blocked.