Hi, please check this thread for a solution:
www.rockettheme.com/forum/index.php?f=53..._v=viewtopic#p697767
A tip was posted there also:When you created your DB for the RocketLauncher install did you set it up as utf8_general_ci
Also did you make sure that when you created it ALL privileges were enabled?
This issue is either related to database permissions or server settings on your hosting account.