Robin,
That is a clear sign you need to go to Edit->Preferences->Defaults, and
change the selections to LocoNet from Internal. Then save and restart. That
should take care of it. Some versions tend to change the Defaults way too
easily by itself. The latest code avoids a few of the reasons. But starting
a profile without having the hardware connected is one of the simplest ways
to have the Defaults change. If you need to work without the layout
connected, make a separate profile that uses Simulator connection for your
LocoNet.
-Ken Cameron, Member JMRI Dev Team
www.jmri.org
www.fingerlakeslivesteamers.org
www.cnymod.com
www.syracusemodelrr.org
Ken Cameron