I've got users in IE 9 and IE10 complaining that its not working. I've tried it on two IE9 computers and it works ok for me. Attached is what the user is seeing. Can you look at the page and see if anything else could be causing IE problems. I'm thinking its related to browser permissions / security on the IE side.
I had this user clear his cache and it did not fix the issue. Again, its working for me on two IE9 machines, but not for all IE 9 users.