After installing the latest patch, I am able to run counter and sampling on Windows XP x64 w/o any problems.
I am not able to get the call graph activity to work. I am able to intrument the component and when I go to start I get an error box stating that there are no valid exe controllers associated with the collector.
This is a simple C++ console app. I have taken the same project and run it with no problems on my Win32 box.