I still do not know what the problem was but simply altering the arrangement of straight track pieces either side of the switch was the solution.
I have just uploaded a patch file awaiting approval.
I am off tomorrow, so any further problems will have to wait until I am back on 15th August. I have just looked in the brochure and our hotel has got internet connection in the rooms. I think I would be in bit of trouble if the wife catches me on UKTS though.
Dave




