I am seeing quite a few responses that are similar to my own situation. The Library palette will appear under Firefox but it won't appear under IE at all. I've tried just about everything. I even reinstalled the core program with Norton disabled. No change. The library works under Firefox but not under IE and of course won't display within Poser itself.  I do not know if it is IE blocking the Flex system or something else.  As per the post above, I can use the Library if I have Firefox running or I can use the XL library python script. So far I'm just using the XL Library and getting on with learning GI.

"A lonely climber walks a tightrope to where dreams are born and never die!" - Billy Thorpe, song: Edge of Madness, album: East of Eden's Gate

Weapons of choice:

Poser Pro 2012, SR2, Paintshop Pro 8