Advance warning to anyone wondering whether to purchase this game, sale or not - if you're running Windows 8 then this game is NOT compatible with it and will refuse to run out of the box, meaning as is.
Capcom have not released a patch/update because we all know they couldn't care less about PC users anyway.
There was no warning about it not being compatible with Windows 8 either.
To get the game working with Windows 8, you need to uninstall the old outdated version of Games For Windows Live (GFWL) and re-install GFWL latest version which can be downloaded from here --> http://www.xbox.com/en-US/LIVE/PC/DownloadClient
After this is done, the game will then work with Windows 8.
This could easily be sorted with an update released by capcom and put out over steam, but in the meantime, as said above, uninstalling old GFWL and re-installing the newest version with sort out the problem.