Quote Originally Posted by Altera View Post
I think ive finally located my problem at least. Usually ive only turned the Real time AV protection off on my Bitdefender 2011, but the instant I uninstalled the Bitdefender AV and now use only Windows Defender + Windows Firewall. My game launched normally.

I would suggest you try uninstalling your AVG antivirus and try then. Hope that helps. It seems to work for me at least.
I would suggest Microsoft Security Essentials for antivirus. I know a lot of people would be wary of trusting MS with security stuff, but I have found that MSE is extremely proficient catching viruses and trojans. Most importantly, it does not have this issue with needing to be disabled, etc. when installing programs (its integration with Windows is impressive).