Well I decided to try a different brand of disc.Bah! It won't use my brand new Imation blank discs.I had to reformat a scratched old Verbatim disc.This worked just fine.
I really can't take this.Another choosy CDRW!
Both exactly the same specs but there you are.
Frankly I've had just about as much as I can take from uppity software and hardware.
I still have to sort out the USB business as well.I didn't understand one word of any of the suggestions I'm afraid being a total muppet at this stuff.
Anyway thank you for everyone's forbearance.