bill - 1:57 am on Aug 2, 2011 (gmt 0)
This is not a final version of the software, it's clearly labeled as a Preview. I don't think anyone should expect this to be production quality right out of the gate. In fact, they have a few disclaimers to that effect before you download.
I downloaded it and gave it a whirl. It worked fine in Vista. I was able to get some text and objects on the screen and animated in minutes. It will be interesting to see how this tool progresses as I'm not a big fan of Flash.