I’m having the same problem but with Google Ads.
The link(s) in the header ad does not work in Firefox/Chrome. But works in Internet Explorer 9!
What are you doing in IE9 with CSS that you are not doing in Firefox/Chrome?
Sorry Dude, I don’t see that error. The second one down is a ‘there is no attribute “rel”” error. I don’t see any missing closing tag errors.