I have a WPF 4 application running on Windows XP. When I run Snoop, it picks up the application, however when I click on "Snoop this application" nothing happens. Also when I click on the magnifying glass nothing happens.
Any ideas?
The new version of Snoop supports WPF 4 (http://www.cplotts.com/2010/02/14/snoop-now-supports-wpf-4-0/).
Which version are you using?