Commented Unassigned: Visual Studio test discovery engine locks chutzpah.json file [198]

I'm running the Chutzpah 3.0.1 test adapter in Visual Studio 2013. It seems that when I have the VS Test Explorer window open, the vstest.discoveryengine.x86.exe process has a lock on the chutzpah.json file. When I try to save changes to the file, the Save As window appears and trying to save gives the "file is in use by another process" error. Killing the discovery engine process fixes it, but of course that process is necessary for the Test Explorer.
Comments: Let me know if this still persists