How are you trying to tun the pages? Cursor keys or page up/down work for me on the same combination.
I'm pretty sure ADE does not support touch if you are tying to turn them with a swipe.
If that still doesn't work ...
There are lots of bugs in ADE2.0. Try replacing ADE2.0 with the older but more reliable v1.7.2.
(You can have them both installed at once if you like.)
Version 1.7.2, it is a little difficult to find, available on Adobe site for Windows and for Mac.
The forum software is sometimes corrupting the link above. There shouldn't be a blank in 'editio ns.html'. The following redirects to the same page: http://tinyurl.com/diged172
I was using the cursor keys, the page up/down, and my mouse to turn the pages. I don't have touch.
Thanks for the links. I downloaded Version 1.7.2 and it's working great. The first link worked and I used the manually install for windows to get the older version of ADE.