HI
More thoughts on this problem. Two years back, when I started to define my own signal masts, I needed to have my own version of the signals in my user files folder to work from. I think now I must have copied the whole xml folder from the C:\Program Files (x86)\JMRI\ folder and that would have included the schema\types folder where signalmasts-2-9-6.xsd is located giving me two copies of that file. When I did the upgrade to 4.8 it would have written the upgraded version to the program files folder but the old version, still in my user files folder, would have taken precedence when loading and given me the problem.
It all seems so obvious now in hindsight but back then there was just so much to get to grips with that remembering all that I had done was just about impossible. A little learning is a dangerous thing!
Again thanks to all who helped here.
Fraser
