When I upgraded to 10.7.4 all my loops (3rd party and otherwise) "dissappeared" in GB. The folders are there in navigation but all the loop options are grayed out. There are like 20 Apple GB loops left, but there should be thousands and thousands of Apple and 3rd Party.
I'm very aware of what rebuilding the loop index is, etc. Searched and searched on the web. Did this like 3 times: