I have the same issue. Did you set the use administrator setting in the compatibility tab under the file properties? I'm not sure why, but I was able to get the install program to run on my Vista system doing that (I still had to wait a while, though - the install program and Vista really don't get along) as opposed to right clicking the file and selecting run as administrator.
I tried right click and run as administrator, then setting run as administrator in properties.
AFAIK there wasn't any difference. Just for some reason my Vista did not like this install at all. I restart my computer after right click-running cause I thought there was a problem.
Basically my PC ran slow as hell. After waiting maybe 15-20m of PC running slow the installer suddenly popped up. Seems to have installed fine but just took a very long time for it to actually get to the install. Guessing it has something to do with the file being huge (1.7gb) and taking a long time to unpack it or something?