Ultimate Branding causing fatal error

Hi,
In setting up the Ultimate Branding plugin, I clicked on 'Enable All' and now I'm getting the error message:

Fatal error: Call to a member function is_main_query() on a non-object in /home/lyrixtube/public_html/wp-includes/query.php on line 749

I think it's because I forgot to disable Theme My Login and there may be some conflicts, but now I can't access wp-admin. I thought going into my cPanel and deleting TML would fix it, but to no avail. What should I do?

Thanks!
-tt