garage band crash
I have not used GarageBand since before installing Sierra. When I tried to open it tonight, I got the message below:
After this appears, the app stops responding and I have to force quit.
How can the plugin be updated if GarageBand can't even be opened?
I want to create a phone ringtone from an existing sound file and I need GarageBand to do this.
iMac, macOS High Sierra (10.13), 2.7 GHz, 8 GB, 5 external drives