It would be useful to know which version of JMRI you are running now, I
suspect you just updated, so also the version you were running. The more
recent versions have tighter checking of the panel files. The results are
rejecting the load of a file to point to a problem instead of (many times)
silently not doing something during the load.
If you can post the file on the group site in the 'Problems being worked on'
we can see it and better suggest the right fixes.
-Ken Cameron, Member JMRI Dev Team
www.jmri.org
www.fingerlakeslivesteamers.org
www.cnymod.com
www.syracusemodelrr.org
Ken Cameron