Since you're using Jur13n's file, you should have three database in your server: GunzDB, AdmWebDB, and LogDB. Did you have these tables before you started your MatchServer.exe?
This was already suggested on my first post on this thread. However I got him to re-install SQL 2008 and everything is working now. I think the problem was related to how SQL was setup, and it needed to be reinstalled with Mixed Mode enabled.