"MuseScore 2" is damaged and can't be opened… [Mac]

• Dec 23, 2014 - 01:45
S5 - Suggestion

When opening the beta app (from Applications or from the DMG), I get this error that the app is damaged. I re-downloaded the DMG and the error persists. It seems that others have ran into this before and the cause is that the package didn't sign properly.

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Screen Shot 2014-12-22 at 19.43.56.png 40.03 KB


This should be fixed by the final release so Mac users don't have to go through an unnecessarily long install process to get it to work. It's not a hard fix, but one that non-technical users may object to.

This will get around the bug here but it absolutely isn't a solution when the software gets generally released.
I believe this message occurs when the package has been signed with a developer ID, but then modified before distribution. This is an error in the build process, as doing this is worse than not signing it at all.