Is this a new mac and did GarageBand come preinstalled? Or did you migrate from a different Mac? There may be many reasons for this problem, check the possible causes:
- Check, if GarageBand is installed in the "Applications" folder and named GarageBand. Otherwise you cannot update it.
- Have you accepted a preinstalled GarageBand to your AppleID? Sign into to AppStore and check the Purchase Tab. Accept, if necessary.
- GarageBand may already have downloaded the loops, but not indexed them. Then you could try to rebuild the Loop Index: Rebuilding the Loop Index in GarageBand
- GarageBand may not be able to remember that it updated, because of corrupted preferences, then try HangTime's "oddball" problems fix and delete the preferences:
http://www.bulletsandbones.com/GB/GBFAQ.html#oddballprobs
Remember, in Mt. Lion the user library is hidden; you open it best from the Finder's "Go" menu, from the main menu bar:
Go > Go to folder then hold down the alt/option key until the library appears in the drop down menu. Select it to open and remove the file Preferences/com.apple.garageband.plist
If all fails, try to reinstall GarageBand - move the application to the Trash and download it again from the AppStore.
. Re: GarageBand '11 won't download additional loops
Regards
Léonie