I installed the game yesturday and it worked fine, today I keep getting the above error message before the game loads up, which is very strange! I haven't changed any thing on the (very old XP PC) I have.

Does anyone have any idea what might be causing it? I have already tried compatability modes and nothing worked.

Thanks,

I have the same error message. Any suggestions?

Same error here. (On Win 8.)

This: http://www.gog.com/forum/capitalism_series/setmode_failed_error/post3 helped.