0.16 Shutdown assertion

I always do a quick round of sanity checks before pushing code signatures. Those checks basically only consist of running the win/osx binaries, making sure the sigs are valid, and making sure that they display the correct version number. So basically, run, then kill after ~3 seconds.

This time around, the windows build crashed with an assertion. Since I have no tools in this VM, and because it's a release binary, I can only provide screen-shot level debugging :(