Actually, ColorThink Pro works just fine on Vista although we haven’t tested it on all versions of Vista yet. Perhaps that’s why it’s not listed on the official webpage yet.
From what I hear, it also might work for several versions of the 64-bit Vista, except for yours, where you get that jagged projection outline. We haven’t been able to fully test it on all versions of that yet either. So when someone asks about that platform, I have to tell them honestly - “Well we haven’t fully tested it yet…”
ColorThink is about as far from an orphaned product as it could be. We are fully committed to supporting it in the future and even have several new features up our sleeve for the next version.