Permissions on the
.htaccess file itself should
probably be 644. I'm not sure if that'll fix anything, however.
Since you're using x10 hosting, I'll be more than happy to double check the
inc/config.php file (I won't need the database info part of it) and changes made to
classes/class_path.php recommended
by this post. I just need to know the url and if its inside a subfolder (and if you need to PM me to keep this stuff to yourself, that's fine!).