Site (Imbalance theme) broken in IE since WP3.1

Hey all,

Okay, I am at the end of my rope here. My website (https://www.veliremus.com/) has been broken by the new WordPress update. It uses the Imbalance theme: https://wpshower.com/free-wordpress-themes/imbalance-free-wordpress-theme/

Ever since that update, the site does not function properly in Internet Explorer (regardless of version, I believe). I realize that this is a theme problem. However, I have mailed the creators (https://wpshower.com/) and Facebooked them, but they do not respond. I’ve tried digging into the CSS to see if I could fix it myself, but no use.

The problem is that, in stead of three columns, the site in IE only displays one column, which then forks into two, further down the page. Both Firefox and Chrome still properly display the site. Also, the JWPlayer –which also still works on Firefox and Chrome– is not displayed in posts (like this one, for instance: https://www.veliremus.com/work/kingdom-company)

I’ve tried all I know, but I can’t get it to work. This is a really bad time for this to happen, since I’m right in the middle of finding a job, and now my portfolio site is broken…

Again, I realize the creators of the theme would be the obvious ones to help me, but they are unresponsive. Can someone please help me? Or maybe tell me which difference in the WP 3.1 update is breaking the theme in Internet Explorer specifically?

Thanks in advance,

Veliremus