I am currently investigating this problem now, and it looks like it is related to that I use Remote Desktop to log into the test server.
During a test run, I will typically minimize the remote desktop, and Windows will therefore stop updating the screen on that host (!!). This is a known issue not really related to White (search for "UIAutomation" and "remote desktop" on Google). Some of
the tests will therefore fail because the tests were not able to find a GUI object within the timeout, and some will be able pass.
It would be useful for me, and perhaps for the rest of you, if each of you could do a few experiments here:
* Are you able to reproduce the failing build if you do not minimize (just make sure it is in full focus for the whole session)?
The next question is then how to "fix it". I guess running the tests from the console of the VM without using remote desktop for the console should fix it? Anyone?