YAY~~!!! Lydia, you may have just hit the nail on the head for my problem!
As one who has a mumeration of avatars, (6.5 - the 0.5 is because I maintain my husband's avatar), all but the one I'm logged in as now are working just fine.
This particular one (my representative of my real life art, incidentally), is the one that has been crashing. I've been getting plenty of research time, as a result, actually... trying out different viewers, one that isn't even tested on a MAC very well, to see if there's a conflict between what that avi is wearing and the viewer (I've had that problem before). So there is a bright side to my getting behind schedule, at least. (~~~~~eeehhhhh~~~~~~)
Same story...
*Maybe* succeed to log in, but crash in a minute.
Inventory not loading.
The inadequately tested on MAC (Dolphin) has had the most success, but I'm stuck in all senses of the word.
Incidentally, being a button pusher, I tried other avatars on the viewers that I was trying to see if that would be a solution, and they worked just fine.
So... dumping cache.
I usually avoid that because it takes so freaking long to reload in the best of times.
But, heck, it's worth a try.