Apologies for the delayed response, I just started the first leg of a Sonic Pi tour - currently in Germany and then headed to the States tomorrow 
@alanza I’m a bit of a weirdo and not using Max at all. I’m using a bit of software called Sonic Pi that works directly with the raw OSC stream. The issue that I’m currently having is that this OSC stream is no longer making it to Sonic Pi on my Windows machine (but it does on my Mac). The problem is therefore not with the hardware, but likely with serialosc or its interaction with Windows (firewalls etc.)
@tehn Hi
Reinstalling serialosc was the first thing I tried but no ball. Do you know how to enumerate the ports on Windows? Also do you know if it’s possible to just cat the raw serial byte screen to disk so I can verify that the FTDI drivers are working?
I also read that Microsoft totally pulled this latest release of Windows (1809) as it was deleting people’s files. It struck me that perhaps Windows has deleted the serialosc config so it’s no longer sending to port 4559 on localhost, I’ll check that next time I fire the Windows machine up (today I’m delivering kids workshops all day
)