Thanks, I got it working (also in the sandbox). It was a fault on my side.
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Did you ever come up with a solution to this? I am facing exactly the same problem - removing of languages works but as soon as I press the "Save" button, "You have one or more errors on this page." is shown.
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It turned out that xpc_connection_create_mach_service does not work with QuickTime.
After spending more than a day with this I finally found the reason: https://github.com/microsoft/vscode/issues/113720
In short: the crash is expected but the app will work when installed via TestFlight.
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Finally I got testflight working by adding the "com.apple.application-identifier" and "com.apple.developer.team-identifier" tags to the app.entitlements file. Now, TestFlight is enabled but the app crashes with a "Code signature invalid" crash.
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I am facing exactly the same problem with a Qt macOS app. The app can be released to the store, works fine everywhere, but TestFlight is not available "Not Available for Testing".
The binary data is as follows:
Interestingly the "Build SDK" and "Build Platform" fields are empty.
Has anyone an idea/suggestion how to get TestFlight to work? Are there specific prerequisits necessary (for instance a minimum macOS version, specific signing, etc.)?
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I found a solution: https://developer.apple.com/forums/thread/128166
Yes, it's sandboxed apps for the app store.
Thanks, this clarfies the situation for me. I will stick with UNIX sockets.
But is it possible to access the shared memory of sandboxed App A from App B assuming that App B is not sandboxed?
