500: Internal server error

Hi Ben, Here’s the error I get when I’m loggedin as admin at http://www.rhgholdings.com. It’s only when I attempt to go to Theme Options in the Dashboard. I have not yet found any other place where I get this error. I’ve tried deactivating a couple of Plugins, User Access Menu and Peter’s Login Redirect. —

This error is generated when a script running on the server could not be implemented or permissions are incorrectly assigned for files or directories

Troubleshooting suggestions:
Temporarily disable any rewrite rules by renaming your .htaccess file if it exists.
Ensure that any CGI or Perl scripts have at least .755. permissions.
If trying to run PHP and you get this error, you may have an invalid php.ini in your /cgi-bin, or may be missing your php.dat file in this folder.

So, with Fetch/Edit I LOOKed at .htaccess but I didn’t dare change anything. What good would it do to rename the file, especially when the instruction says ‘temporarily’ ?
Confused and alarmed, your friend,
Laura