Securom Error?

[Qpak]

I bought the game at my local store and installed it. If I start my computer I can play the single player version. If I exit and try to restart however, I get an error that says "conflict with disc emulator software detected". I could see that there would be a problem if it did this every time but it only does it after I've already played and exited and am starting for a second time. Does anyone have any ideas? I havn't even tried to install steam so as not to compound my problems.

Thanks.