wptdriver launching blank IE9

I am using Win 7 64 and wpt 2.13. The test run for 4 min. ( default time out) with “Test completed but there were no successful results”. I investigated and found the wptdriver is launching blank IE9 and does nothing.
I could find this while test was running by monitoring the RDP session.

locations.ini , wtpdriver.ini and connectivity.ini files attached.

Appreciate your help in resolving this

Kumar Venkatraman

This issue is resolved. I uncommented the browserExe=pagetest.exe from the locations.ini.
I found the solution here : https://www.webpagetest.org/forums/showthread.php?tid=849