LulzBot Cura 2.6.66 Qt Issues

I am running Windows 10 and recently upgraded from 2.6.52 to 2.6.66. If I choose to run Cura right after installation everything works fine, but if I try running it again (either from the shortcut or installation folder) I receive the following Qt error:
2018-01-26 00_05_12-cura-lulzbot.png
I have tried setting QT_QPA_PLATFORM_PLUGIN_PATH to C:\Program Files (x86)\cura-lulzbot 2.6\PyQt5\plugins\platforms (which does contain qwindows.dll) but I receive the same error with a pathname specified. Reinstalling allows me to run Cura again. I do not have any other Qt installations.

Any suggestions on how to fix this?


Sorry to hear about the issues. If possible, can you post the Cura logs from the crash upon restart? We would like to look into them for possible issues.