[sane-devel] Error Message

[Ron]

Ubuntu 10.10
Canon CanoScan LiDE 60

XSane opens okay and finds scanner the okay and reports "xsane 0.997 
LiDE 60:027".

Clicking on "Scan" produces an error popup that says "Falied to start 
scanner: Invalid argument" and no activity at the scanner.

I have not been able to find any hint in the available help except the 
instruction to see the backend documentation.

What is my backend and where would I find documentation for it?

Can you suggest anything I should be checking?

Ron