Thank you soooo much Bobby C. I have that working now. I downloaded your files and copied over to the STB, downloaded the latest oscam as you suggested, disabled the older softcam, rebooted and restarted oscam, and after a few seconds all was up and running. I owe you 'a rake of pints' - as we'd say here in the Irish Midlands - or a vat of wine, or something significant for your generosity and help. What do you think the problem might have been? Do oscam plugins need to be updated from time to time? Does something change on the Tivusat side that requires a change in the files? One other question: is that softcam file meant to be there too?
Thanks again. Very grateful.