usb scanner - correction

[Fedora List <fedora-list bluewise co za>]

Hi list

Scenario:

FC1
Mustek BearPaw 1200 CU flatbed scanner (GT-6801) USB
copied firmware to /usr/local/share/sane/gt68xx/PS1fw.usb
'chmod'ed PS1fw.usb to 755 
commented out override in /etc/sane.d/gt86xx.conf

CORRECTION >>> When running XSane (not XScanning) I get (even as root):

Failed to open device 'gt68xx:/dev/usb/scanner0': Invalid argument

Opening Kooka (bottom left panel):

Problem: no scanner was found.

scanimage -L picks up the scanner.
sane-find-scanner also picks up the scanner.

Hmmm... what am I mising?

Thanks in advance.

Stuart