Can not Validate new users for access


I have a user that just joined and says they are not getting the Click To Approve your account email.

So I went into the Admin Panel as Super Admin and I can see his details. I tried to change his "User Statue" from : "Awaiting Email Confirmation" to "Valid" but when I click save I get this error:


You don't have permission to access /admin.php on this server.
Apache/2.2.21 (Unix) mod_ssl/2.2.21 OpenSSL/0.9.8e-fips-rhel5 mod_bwlimited/1.4 Server at Port 80

Also if I look under "Users Awaiting Approval" It says No users are awaiting approval.
Is that status area not people that have not clicked the email approval link?