Have you tried asking Stephen? I know that when I 
originally had trouble with the images (way back 
when) I tried what was written in the error 
message too and it didn't work -- but he was able 
to tell me something else to do that got me most 
of the way there. I still can usually never see 
the images of things in my cart and can only see 
about half my watchlist images. However, aside 
from the server crash (which is what this was), 
I've had no trouble seeing "for sale" images 
since then.

Belatedly. . . Thanks to everyone who posted! I 
was glad to learn I wasn't the only one having 
trouble, since it reassured me it wasn't 
something about my computer. ^_^;;;

And for you, chipn, if you have some shows you 
like and want to see Museum's stuff for sale, I 
wouldn't mind privately mailing you some screen 
captures of the listing pages so you can "shop by 
number". ^_^

Many Sharp Smiles,
--Drac