Yes it does. I have several other points that I can try I have tried one with similar results but, given time, I will try others. It does seem to indicate a fault with the point ( the fault shows as soon as I connect the point which is isolated from the rest of the layout) but, on close inspection, I can't see anything that might short out. I will also try other configurations to see if I can bypass this particular setting. Thanks, Roger, for your help. I shall report back.