I've read through some of these posts and googled the problem too, but I can't find anyone explaining the same problem I'm having.
I'm using the tree menu, and it all works fine in Firefox and Opera, but in Chrome, IE and Safari, although everything initially displays fine, once the menu is extended, it's giving a box as if an image has failed to load. The weird thing being that there isn't meant to be an image there. I expect a bit of code tinkering would fix this, but I could really do with being pointed in the right direction.
Has anyone else had this problem?
Any ideas?