In the Vista docs, it mentions UIPI and UAP being off by default in Beta1. Since installing the Dec. CTP, Visual Test gets an error "cannot set playback hook" when attempting to click buttons on other applications. This is essential functionality for UI scripting via MSAA applications like Visual Test and Silk.
What's the solution for enabling a VT to click buttons Is this a bug of the Dec. CTP or a feature We can and do run all of our Automated Script Testing as Admin. This however, does not resolve the issue.

Visual Test is blocked from clicking UI
MartinClayton
http://forums.microsoft.com/MSDN/ShowPost.aspx PostID=133455&SiteID=1
I've been waiting for some kind of response on this issue for ages. And apparently, so have many others - the view count for the above thread is over 3000. But, not a word from anyone in the know.
Surely MS can tell us whether this is a temporary problem, or a deliberate change that is going to adversely affect (if not plain kill) many products when Vista goes live
Pauls1965
ecn i
If they drop all support for journaling, they'll kill a lot of genuine applications - not least one of their own!
Dustin Campbell
Ahmad Shawky
Yes, sounds like the same issue, and you are going to get back..."By design". This was a security vulnerabilty exploided by a number of viruses. It is Often called a "shatter attack"
Josh
http://windowsconnected.com