Help please...! GarageBand Won't Load

Help would be great, please...! Trying to access GarageBand and I get the following message:-


[ GarageBand unexpectedly quit while trying to use the Audio Unit “AUMatrixReverb” by “Apple”. This plug-in may require an update. ]


After this, GarageBand will not load and freezes. I cannot seem to find a "plug-in" for this to receive an update - does anyone else have this problem?


I'm currently running macOS High Sierra Version 10.13.6 after update today.


Thanks for your help :-)


iMac 27", macOS 10.13

Posted on May 14, 2019 3:26 AM

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Posted on May 14, 2019 6:03 AM

Can you launch GarageBand on a different project by directly clicking a different project? Without opening the current project?

AUMatrixReverb is installed as part of the system. It appears in the list of standard Apple AudioUnits.

If a different project is also not working, I would Shut Down the Mac and restart it in Safe Mode and test again. Sometimes incompatible software can add incompatible system extensions, that are causing problems. Use safe mode to isolate issues with your Mac - Apple Support


5 replies
Question marked as Top-ranking reply

May 14, 2019 6:03 AM in response to HelensApples

Can you launch GarageBand on a different project by directly clicking a different project? Without opening the current project?

AUMatrixReverb is installed as part of the system. It appears in the list of standard Apple AudioUnits.

If a different project is also not working, I would Shut Down the Mac and restart it in Safe Mode and test again. Sometimes incompatible software can add incompatible system extensions, that are causing problems. Use safe mode to isolate issues with your Mac - Apple Support


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Help please...! GarageBand Won't Load

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