I had D2 working fine on Win7 x64 for almost a year, but a recent install changed something that only affects D2 for some reason. So, rather than re-install Win x64 I was hoping the devs could give me at least a hint as to what the low level dependencies were and maybe I could refresh something like .NET 3.5 or Security update KB286538 (or whatever). I have tried quite a few things (including everything any forum suggests) to no avail.
Only the devs know what the low level dependencies are, and the solution to this problem may be the solution for many people who have never been able to get it to run. It's probably another vcredist like VS 2005 or VS 2008 (I've tried quite a few of those too). I think the Tera installer did something with the language packs (localization) if that helps. So, does D2 require something in this area?