That's the same problem as you are having with the other hack. For some reason the user table is giving us fits when you have a table prefix in the db and we use the TABLE_PREFIX on it. I am still looking into it and I will come up with an answer as soon as I know something. The strange thing is that there are those that also have a table prefix and are not having this same problem.
Sit tight and either disable that query for now or wait in installing the hack for this one until I get an answer.