Pietro, thx for reply.

Yes, Log4OM always set to OmniRig. As I understand it, OmniRig is what allows multiple pgms to "share" one Port, which is exactly my setup. That's what I meant by "sharing one USB cable". In my setup, the 7610 has two virtual USB ports, one of them is used by OmniRig and wsjt/Log4OM both talk to OmniRig rather than the 7610 Port directly.

As I mentioned, everything (Log4OM/OmniRig/WSJT) was playing perfect together BEFORE the upgrade to 2.5.4!

Thanks