Not a problem with Digitrax, it is a problem with JMRI who does not poll and confirm the Digitrax Command Station is present or not ,for what reason I do not know.?
I have a Locobuffer-USB, Digitrax PR3, PR4, Locobuffer-Serial and none of them cause me grief for as long as I have had them.
They all connect to either of my two DCS100's or Zephyr on demand with the proper setup. And I have jumped and leapped between Windows versions and JMRI versions back and forth.
I was simply pointing out that a wrong setup in JMRI? can lead you down a wrong trail.
Heck if you define? System Manufacturer as "NONE" and System Connection as "No connection" in Preferences, both Service and OPS mode programming show up GREEN (JMRI 4.17.6).
Marc?