Tried to install mc 22 still no luck, installed winVLC player, works great, looks fine. Replaced the dvd drive, still jittery, only works in mc 19 in red October fast computer and is sometimes jittery. If I use standard it gives me key error failure still in mc19, recognizes disc in mc 22 but stops right away. any help appreciated. Happy to stick with mc19 or whatever will work,