Hi, I'm going to "warm" this one up, as I just ran into the same problem. Running vpt on windows 11 Home, Buiild 26100.7840
I allowed every kind of connection, turned the firewall off, allowed "vpt8" as well as "MAX" to access through the firewall, I've done the above self send trick ... I can'Ät seem to get OSC out of vpt or into it.
I have tried sending and receiving OSC with touchDesigner on that very same machine and it worked.
I've also done a full delete and reDownload of vpt8.
Did something break ? I think I remember having used OSC before, years ago.
Any hints are highly appreciated