When High Fidelity launches, the window remains grey without rendering any graphics. Furthermore, when High Fidelity is in this state it cannot be closed normally, nor via the task manager and requires that I reboot.

A copy of the log file can be found here: https://drive.google.com/open?id=1Df2j9S4gZLKwXPEW-X9Q6_wDbnUFLutl