@susanleemburg I have made some progress but I haven’t cracked it, no.

I updated my original post with more debugging here: https://neuromatch.social/@elduvelle/110702681230776774

Also I started listing different problems and what I tried to fix them here (written for me, but happy to share):

https://github.com/elduvelle/SpikeinterfaceMS4_GenzelLab/blob/main/mountainsort_install_problems.md

I even opened a StakOverflow issue, I think the link is in the first post.
I will come back to it in a few days because I know it can work on windows and I really want to make it work… but I am also going to get #Klustakwick running with my data (#Trodes format), and #Phy because I like it.