Hi Tanya,
In this case we are testing an installer created with WiX for a .NET application.
We already tried adding a delay and increasing the "Method invoke timeout", neither worked out for us. Even calling the function directly, separated from the rest of the test, causes the same strange issue.
It's a simple continue button.
TC can find it in the object browser, the name mapping and highlight it on the screen (as already said, it works perfectly fine on W7/WS2008).
The parent window as well as the button itself are active and enabled.
Best regards
Matthias