Nelson,
You should check the Help->System Console, it likely has some error messages
that would help us see what is wrong. Since you are coming from a rather old
version, there may be issues with the update of the profile configuration.
So there may be something 'slightly' wrong in the connection or defaults in
the Preferences.
-Ken Cameron, Member JMRI Dev Team
www.jmri.org
www.fingerlakeslivesteamers.org
www.cnymod.com
www.syracusemodelrr.org
Ken Cameron