Mike,
Thanks very much again for your kind support.? I got that message for myself just before your's came in!? Sadly it's no use sending MORE commands - my problem is too many commands too close to each other!? The delays in switching within the stall motors that I use, and their instant power consumption, simply causes garble if you send too much at once.
I have reverted to using routes and so far with the additional amount set to its maximum of 1,000 (i.e. 1250 ms delay in total on each turnout command) the results on the layout are probably OK, but as I move on to more complex things I will probably need longer delay. At the moment I have 6 firing "at once" - my worst case will be 10 - so I'll need to break that up somehow.
Thanks again.? Without your encouragement I would have walked away (again!).
Iain