Garageband 6.0.5 suddenly won't open. It opened just fine yesterday but now it says it 'cannot be opened because of a problem'.
I have High Sierra version 10.13.6 and have been using Garageband 6.0.5 with no trouble - until suddenly today it won't open.
Does anyone out there know why this might be and how to correct it?
Many thanks in advance.......