Hi Dean.
I have uninstalled and reinstalled mach and the cslabs plugin and let it run the firmware uploader. machine functions seem to be ok so I take it that I did that bit ok. I was a bit worried that I wouldn't get the right xml file for mach.
When I open the cslabs plugin I get the same Invalidargument error but this time the number is 65535 instead of 255.
This is damn annoying as everything was going well up till this happened, slow but well.
I used 2 in the filter box because I read it in the manual somewhere.