I've just installed GR onto a clean installation of Windows 7 and am having a problem with Alt+Tabbing. It works fine when playing an actual game, but when I Alt+Tab while using the menu or looking at the after-action screen, I can get back to Windows but I just get a black screen when I try to go back to GR. Even if I try a few times I can never get back to GR.
Anyone else have GR on Windows 7?