Need help starting the game please

I downloaded the full client and extracted it all to a new folder. I then launched "main". It seemed to update fine, but when I hit start, the launcher just closed and no game started. I then tried using "blizzardmu" and got the same problem. After installing the patch like the directions said, the same problem occurred. I tried connecting to the Teamspeak channel, but it kept saying that I had insufficient permissions.

Does anyone know what is causing this problem? I have tried to run both game applications as the administrator. I simple hit the button in the bottom left and the launcher disappears without a game starting up. Task Manager also shows no trace of it. Thanks for any help. I have played on other Mu servers and never had this problem.

Just in case- I run Windows 7 64 bit and have great computer specs. My video card is a Geforce GT.

 

Update:

I've done the DEP thing and made sure that no firewalls or virus protectors are at work. Also, I have no Trojans as far as I can find through scans.

 

Did you turn off your antivirus while extracting the client? Sometimes, your antivirus will place files in the "Virus bin" without telling you, meaning, the game will try to launch but is missing a file.

 

Terrafrit, I actually don't have an antivirus, so I guess the answer to your question is basically yes.

Gix- Does having another MuOnline client installed create a problem? I do have another client installed that I use. Tomorrow I can try uninstalling it and see if it matters.

As for the teamspeak thing- your main site has it as a button under the forums as "live support." If live support does not provide support, then that is misleading.

 

Try and mess around with your graphics settings. As far as I am aware, it's known that Mu Online has a problem with anti-aliasing. Try turning it off on your graphics control. Other than that I have no idea. I'll try think of something.