Well, are there any files in those folders? You don't have to worry about files in the folders you can't even open, D|S doesn't look at the thumbnails until it wants to display their contents. If there are files, try moving all of them to another location, see if that fixes the issue, if it does move them back one by one until D|S crashes again. If there are no files, how about folder names? Again, if there are odd names try moving that folder out and see if the crashing stops.

Another thing you can do is try swapping the palette display mode - if you click the triangle button at top-right you'll get the options menu. I suspect you have Display as list checked - try Display as tree and then use the +s to expand the library trees until you get to the one you want: if expanding the Figure or Pose folders causes a crash, without clicking on the folder, then that sounds like a folder-name issue; if not it sounds like a file in the folder, and by not clicking on it you should be able to get to the things you want to use.