GreaseWeazle F1: Invalid unit

[nightgryphon]

OS: Win 10 Pro
Fluxengine: Development build 2026-01-01
GreaseWeazle: F1 firmware 1.6

Both GUI and CLI are non functional :(

GUI Client: Greaseweazle is detected correctly but any task fails with error "FluxEngine error: Greaseweazle error: Invalid unit"
Comand line client: starts motor but can't detect RPM while greaseweazle client works perfect

C:\Program Files\FluxEngine>fluxengine.exe rpm

   OPTION: 80 track drive
   OPTION: Autodetect from hardware
   OPTION: PC drive interface
   Using Greaseweazle GW066CFF545051827167201643 on COM3
Error: unable to determine disk rotational period (is a disk in the drive?)

C:\DIST\greaseweazle-1.23>gw rpm
Rate: 361.011 rpm ; Period: 166.200 ms