@dalias @ieure @chris @porglezomp I’m not sure I’d call the message a lie. An app bundle isn’t just a loose binary (this message doesn’t come up for loose binaries), and a signature has been an expected item in the bundle for over a decade. A bundle which is missing expected resources *is* damaged, just as much as if the bundle were missing the Info.plist or some framework it uses.

It should definitely provide a way to find out exactly what about the app bundle is weird. NSError even provides several fields like localizedFailureReason which could easily be used for this.