I recently got an invite from Valve but after i installed Dota2 and tried to run it, it crashes after the valve logo. I am currently running Windows Vista on an Intel Core2 Duo CPU @2.26GHz and Mobile Intel(R) 4 Series Express Chipset Family. I'm assuming that it's just because they haven't optimized dota for my specs yet because i run Starcraft 2 fine, but I'm curious to also why they even bothered sending me and invite.