Universal plugin control panel hangs in Joomla

I have installed this several times. Every time I go into the Universal plugin control panel in the admin sectiuon all I get is the loading bar it never stops. I can see the options behind the loading bar but cant seem to get it working.

Are you using IE9 ?
While client side part of scheduler works with any browser, admin panel will not work in IE9 (we will fix it in the next version )