Rav, Now sorted. Probably all my fault. I think that my confusion was due to using the Lua script to set up the S8R receiver, which has to be started the way I was trying to start yours. (Unless you know different). For some reason I could not get it to select GPS2c, so I changed the file name to GPS2, and all seems well. I have another glider using the same setup, which I may be able to fly tomorrow, so I will see how it goes.
Sorry to mess you around, and thanks again for your help, it is much appreciated.
BC