Looks interesting but from entries on their forum, there were problems getting it running on XP, with no report of it being fixed, so if it won't run on 7 either …

If it works for you & you like it, just accept that it may never be updated. That's the problem with many of these one man projects. I see that even Anim8or, which was pretty popular looks like it hasn't been updated since 2007. Of course, even an established commercial product can go away - see TrueSpace.  

"Democracy is a pathetic belief in the collective wisdom of individual ignorance." - H. L. Mencken