4
Log into your site via FTP and check the permissions on the cache directory. For most hosting accounts, the permissions will need to be chmod 777 or Read/Write/Execute for Owner, Group, and World.
After you verify the permissions, check to see if there is a file called adminmenu.php inside of the cache/ folder. If there is, delete it. It will be recreated the next time you log into the Admin panel of your site.
Hope that helps.
James
P.S. Where are my manors?!
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