I'm currently at work using Win2000 with IE & Firefox 1.0.4...same as you get. It works with FF but not with IE.
Looking at the bottom left corner of IE, that error button show this message.
"Problems with this page might prevent if from displaying properly or functioning properly.
Error Syntax error
Maybe check line 56 for some kind of syntax error. It's odd it won't display in IE but other browsers.