Rename Garageband loops
Renaming Garageband loops ... I had the same problem. Follow this process:
1. Locate the garageband loops you downloaded and then move them into the trash but DO NOT DELETE THEM (AKA, don't empty the trash)!
2. Open Garageband and then locate one of the loops you added. Then, select it as if to take a sample listening to it. Your computer will tell you that it can't be located and will ask you if you want to ReIndex your library. Choose to ReIndex it as opposed to continuing.
3. Take those loops out of your trash and put them back where you had them. Rename them before deciding to drop them back into your LooP Index again!
I hope this worked for you. We ALL HAVE TO STICK TOGETHER AND POST ANSWERS!