Thanks Stuart - unfortunately I can’t find those files from 5 years ago - I think they must have got lost in a PC meltdown I had the following year. I’ve found the code to get Autolearn re-registered but that’s all. I’ve emailed Tom with the problem so hopefully he’ll help in due course and resend the files.
Edit: I seem to remember the relevant personalised site file from Tom was cty.fdt file so I restored that from last night’s PC backup but nothing changed - still says I’m unregistered so I think I’m stuffed until I get new registration data from Tom.