This update is available on the beta branch for QuiVr. It can be accessed by going to your steam library, right clicking QuiVr, and selecting Properties -> Betas -> and selecting the 'beta -' branch. You can revert this by going to the same place and selecting 'NONE - Opt out of all beta programs'.
After continued issues due to Unity 5.6 code deprecations and crashes, this update is a re-release of 0.37.3b with Development logging on (expect worse performance due to logging) with a complete update of the Parse database system (using source code instead of a DLL) and removal of Graphics Jobs (an experimental feature that I expect caused the crashing).