Jon, it sounds like Windows is still using the anrb.exe. Try re-booting the PC, then DON'T run Radarbox, and try replacing anrb.exe with the new one.
Hi Tarbat and all who've offered help - SUCCESS AT LAST!! With RB disconnected from lap-top, Shut Down completely, re-started computer, went into C drive, clicking until I found the screen listing all the files "color, data, drivers" etc.. I then renamed the ANRB file as "old 3.07", I could then Cut and Paste the 3.11 file to replace it, plugged RB in and immediately (more quickly as well) started to open and run OK. Many thanks to all for the patient assistance.
I'm now getting network flights fine, but virtually nothing from hardware. I've got a Returns Ticket No., but have delayed posting to W&S until I received a brand new antenna from them (ordered Sunday, received today - spot on!), to prove it's not antenna related. The wind and weather are such at the moment, I wouldn't really want to put an exterior antenna out in it, let alone a brand new standard one. The box seemed to die Sunday before last, fine in the morning averaging 30 or so in My Flights, then zilch in the afternoon. Mine is one of the new Serial Nos (<12months old, with 2009 sticker on the box sleeve).