Are the FTDI drivers that ship with 0.9.4 nonstandard or something? I have a vinyl cutter that uses the FTDI drivers that it gets from Windows update and after upgrading to 0.9.4 and it installing the FTDI drivers (I don’t think there was an option to skip this?), it totally broke my cutter setup. The device was no longer accessible despite a FTDI COM port being listed in Device Manager.
I finally had to get an uninstaller from ftdichip.com to remove everything and let Window auto install the FTDI driver for me again. Unfortunately I don’t know what versions were in place, I was trying to get the shop working again asap.