Since Rockettheme does not actively maintain the Magento themes you might have better luck over at the Magento community site.
community.magento.com
This is probably some type of javascript issue with the browser you're using and the version of Magento. Debugging the page might help you track it down.
Magento - phpBB3 - Kunena - RokBridge Specialist
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Use the Thank You and Life Preserver Buttons!
Your signature is also great place for setup details...help us help you!