Thanks guys, for your comments.
Apologies! I hadn't added the "terminal_button.gif,launch,/nto/photon/bin/pterm" to the SystemPanel.init file.
I get the CF mount fine and the backup image seems to work, although it doesn't take 2-3 mins. I'm assuming this is for a "full" Audrey (memory)? Also what's a quick way to check the image is actually on the CF? Trying to mount cf, doesn't seem to work. df yields more information but how can I be sure a good image is on the CF. Yes, you've guessed it... a Linux newbie (but learning and that's what it's all about!)