Apple Loops not showing in Loop Browser
So, got a new Mac Mini a few months ago and decided I'd make the move to Logic 10.5. Immediately had to Time Machine back to 10.4.8 due to incompatible 3rd party stuff. That's been ironed out so opened up 10.5.1 and all is working great except nothing showing in Loop Browser. I have tried "Reindex All Loops" several times to no avail, with the longest wait being overnight for 10+ hours...still spinning "Indexing Apple Loops Library" the next day. My sounds have always lived on an ext. drive. It's not an issue for any Apple instrument; Alchemy and Sampler all see their libraries and Alchemy has its browser full intact. I've gone so far as to "Relocate Sound Library..." and actually yesterday just "Download All Available Sounds" even though they're already in my system, just to see if some download receipt was corrupted by having both 10.4.8 and 10.5.1 on the same system or something. No change. The loops are all there...30Gb+ of them. I can Finder search by caf, or some favorites by name and pull them into a session and they work as expected. But nothing in Loop Browser still. I don't use Apple Loops all that much, but definitely want to get this resolved.
Mac mini 2018 or later