Just installed the full download on a PC running Vista Ultimate. Haven't played it yet but it launches OK. I tried the portable version on an older portable v6.30 but that attempt couldn't find MSVCR100.dll. It did say I could attempt re-installation, but I went for the full download which worked.
Great application, I use it between three machines now, one running Vista, another 8.1 and the final one running XP, just transfering the Stevefire database.
Thanks for your hard work
Ian