I've just tested EG and everything works like a charm. What graphics card are you running, and what version of vista? Again I recommend double checking vista drivers from microsoft. Also check the website for the gfx card you have to see if they have a vista update patch that you might not yet recieve from microsoft. If neither of those solutions work, backup your continuum files, and then completely uninstall, reboot, then reinstall continuum. Another issue could be, as I've had the same problem on various versions of windows, xp included, is that sometimes drivers don't always install 100% correctly, so that you might end up with small graphical problems during limited selected times. I've had said problem with continuum, and outside of it.