Modal Popup in IE submit button does not work We are using the Ctools modal popup for registration.  In every other browser, this works.

In IE8 and IE9, after filling out the popup form, when a user presses "Create Account", the form disappears, and then pops back with all the fields empty.  In other browsers, it reroutes to the registration page.

I tried debugging in F12 developer tools but I'm not sure where to look.
Have a look at http://drupal.org/node/1549934 for a potential fix.