Garry's Mod torrent help?

Twitch

Registered Member
#1
(Wasn't sure which section to put this in, this seems the best, though.)

I got the Garry's Mod torrent from Demonoid, and when it was installing my McAfee deleted the launcher. So i shut down my firewall while Garry's Mod was installing, and then it downloaded and I could play it. After playing it and setting up my firewall after, it deleted launcher around twenty minutes later. Is there any way to have my firewall up AND be able to play Garry's Mod? I don't want to shut down my McAfee just so I can play this game a few times a week.