There are lots of bugs with ADE2.0, and for that reason I have often suggested people install v1.7.2 instead.
In a lot of cases they have reported back success from the change.
(I call the move from v2.0 to v1.7.2 an upgrade; I don't think that's the offical Adobe term.)
That said, I find that ADE2.0 can work on my Windows 8 (within the limits of these bugs).
I don't usually run it because of the SONY/Overdrive bug