Collapsiblock not displaying correctly

Hi jmburnz,

I am using Genesis subtheme and have the Collapsiblock module installed. The Collapsiblock module is installed correctly and enabled, and I added the code to block.tpl.php according to http://drupal.org/node/472266. Still the block's output is not correct. I've been told that this may be an issue with my XHTML code? When I switch to the Garland theme, the module works correctly and I am able to expand/collapse the blocks. Would you mind taking a look to help me figure out the problem? I've asked around and on the forums and irc and still can't solve this issue.

Thanks for your help!