Hello ALexander,
I read your thread and here is the solution:
Click on "SETUP"
delete any items in the list by clicking on the "-" (minus) sign
now, click on the "+" (Plus) sign and locate the Apple loops here:
Library-Audio-Apple loops-Apple loops.
Click on "Index now"
and the clips will appear on the list.
You may add the Garage band loops as well, if you navigate you will find the and follow the same steps.
Good luck.
Ah, by the way I am answering myself since no one cared to help...
Sad