For any of you who have launched NBA 2K12 on your PC today, you may have downloaded a problematic update that includes files intended for the PS3 version of NBA 2K12 and not the PC version. The NBA 2K development team is aware of the issue but until a fix is implemented, there is a workaround for those who are having problems running the game detailed below.
1. Go into the %APPDATA%\2K Sports\NBA 2K12\Online Data folder.
2. Delete the downloads subfolder.
a. Disconnect the internet whenever you start NBA 2K12.
b. Or create a firewall rule that will disable all internet access for NBA 2K12.
If you have not played the game and received this update, I suggest blocking NBA 2K12 from accessing the Internet or disabling your Internet connection when you want to play NBA 2K12 until the issue is resolved.
Thanks to Leftos for the workaround. You can follow this topic in our Forum for ongoing discussion of this issue.