Have you decided to try and compress your site with GZip Compression?
Did you click the check box to
compress all HTML text using GZip compression and now you get an internal server error, cannot log into your admin panel to un-check that box to set it back to normal?
Well there is a quick and easy fix!
Go to your ftp interface and navigate to:
open catch.php edit line 13
Change true to false
Save and re-upload