Dave,
OK.?? JMRI does not use/modify the registry ...? but simply installing JMRI causes? 26 "changes" to the registry.
This I observed from a clean, 0% JMRI present in registry,? install? and then Immediate uninstall of JMRI without using or working with any component of JMRI. There were? still 14 changes to registry present re JMRI AFTER uninstall of JMRI? using Apps & features.?
After a reboot of PC, thinking an update to registry might occur, the 14 changes to registry re JMRI ? still remain. Granted these are possibly not from the JMRI Installer per say, but they are done during the install process.
And I doubt it has anything to do with what Dennis is encountering, just my observation, for what it is worth.
Marc