So I just bought myself a custom built, with a AMD 64 bit processor. When I load Pro Tools I click on the Icon and my system automatically resets. I've loaded the PT software on a 32 bit system and it loads fine. I think it might be a problem with the chipset. I'm using a NForce 4 chipset. Has anyone used the VIA chipset that is compatable with the AMD 64? I'm thinking that maybe this is a problem with 6.4, and 6.7 will fix it. On Digidesigns site it says they have no unknown problems with the AMD 64, but it's referring to 6.7 . Does anyone know anything about this and have anything to add? Anyone?