Have I read the related troubleshooter articles above before posting (which pages?)? Yep
Have I searched the tickets before posting? Yep
Have I read the documentation before posting (which pages?)? Yep
Description of my issue:
I've got the same problem as another user in an earlier ticket on 9/4/12 which locked me out of the admin area:
Fatal error: Class 'JUpdater' not found in /home/xxxx/public_html/administrator/components/com_admintools/models/cpanel.php on line 264
Question: Can I go in via Cpanel and delete the AdminTools component in the Administration folder to get admin access, update from 1.7 to 2.5 and reload the latest version of AdminTools?