There was a syntax error in Aware IM Javascript file reproduced yesterday by one customer. Most versions of IE and all versions of other browsers do not consider this a problem at all, but some old IE versions think it's a syntax error. We will fix in the next build.
IE 9,10,11 should all be fine UNLESS you are working in the IE Compatibility mode. So double check this. If you are not working in the compatibility mode then this is something else - maybe security issue.