Problem Updating User Table - DB Error 1064

[Kinneas]

When trying to update a user record directly in phpmyadmin, I am getting the following error.

SQL query:

A

MySQL said: Documentation
#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'A' at line 1

This happens even if I just click edit, make no changes and try to save the record again.

I really don't understand MySQL that well, so make sure your explanations are in "idiotproof" terms

Thanks in advance.