Win 7 64-bit with Radeon 7850 and Catayst 12.1. When I launch Disciples, it connects to steam, but then the application just closes. I purchased this on gamersgate but activated on steam. Works fine on my old system that is Win 7 32-bit with a 5770 and version 11 .4 drivers. Application ID error is 1000. Doesn't tell me much. Gamersgate support said the program is not supported on Win 7 but I think that is a cop-out because I can run every other legacy program fine, and D3 Reincarnation just was released a few weeks ago! I hate to revert to old drivers for one game, but I can't think of anything else to try. I will post results here, but if anyone has similar issues or a solution, please post.
Thanks for listening!