whenever i start one of my 50$ games, install, then when i play it for a while my gam e won't start and i get an error message that says 'Could not write lisense data!'. what does this mean and how do i fix it? it is just my games that involve a disk. it only does this for Grand Theft Auto IV and The Sims 2. i have windows vista and a good video card and processor. HELP! i just want to play my games again.