The bottom line is I can't get any of the rocket theme templates to work, HOSTGATOR can't get the templates to work, and none of the solutions from ROCKETTHEME'S FORUMS have been able to offer a solution.
This is really perplexing because we always suggest Host Gator as a hosting solution for Joomla.
Many of the moderators here use Host Gator and often recommend them because the templates work all the time every time.
(Before the templates are released, we do extensive testing on localhosts, Host Gator, Rochen, BlusHost, etc.)
As long as I have used Host Gator (and I'm sure it's the same for other moderators as well) I've never had a problem running an RT template.
One thing that I noticed; it seems that you are applying the template to an existing install, perhaps an install with the stock Joomla install or an install with Fantastico?
While this should work as well, for further troubleshooting you may want to try installing the template in a subfolder of your site using the Rocket Launcher and the Sample Data (with a new DB).
Also note, that you may want to try uploading the zipped Rocket Launcher package to your site and extract it to the sub folder you created as opposed to FTPing the files from your computer to your site.
If you can get a fresh RL install to work with the Sample Data in a sub folder, it may point us in the right direction.