Doc,
First, please say 'which latest' version of JMRI you are using?
Second, use the Windows Device Manager to discover which COM port the
NCE-USB is using. Do this by having it open as you plug and unplug the
device.
Third, check against the notes at ncedcc.com for the latest version of the
driver for the NCE-USB. It got smarter at some version update. Old version
would change COM ports as you moved it around the computer jacks. The newest
seems to keep track better and just use one COM id.
Fourth, which version of the NCE-USB are you using? Does it report as 6.*.*
or 7.*.*? That's in the Help->System Console, it comes back when JMRI asks
what did it connect with.
This will help us get you the right information. You may want to leave open
the console while running as it may be telling you about issues when it has
trouble.
-Ken Cameron, Member JMRI Dev Team
www.jmri.org
www.fingerlakeslivesteamers.org
www.cnymod.com
www.syracusemodelrr.org
Ken Cameron