Hi Paul and Fred,
Many thanks for your help, finally got the WiFi sorted and managed to transfer all my Expansion packs using it.
It turned out there was something strange going on with the YEM program. l'd downloaded the new 2.5 version and it showed up in my Windows 10 programs as being 2.5, but after a lot of problems where l couldn't even import the instrument info. using a usb l finally discovered that for some reason the program hadn't installed 2.5 and was still running 2.41. Had to delete the 2.5 download and the 2.41 version and start from scratch. Finally got it all sorted.
Kind regards,
Russ