Comment 69 for bug 195782

I have the "failed to start scanner: invalid argument" error
I have made several attempts to analyze the problem,
with very limited knowledge of debug options.
Below is some information on what I have done so far:

Xsane header: xsane 0.996 CC-570L:003
device 'epson2:libusb:002:003' is a Epson CC-570L flatbed scanner (this is also a printer)

I have installed utils using: sudo apt-get install sane-utils
I have run 'groups' and 'scanner' is listed.
I have installed extras using: sudo apt-get install libsane-extras
I have run sudo xsane and ignored the warning, and proceeded;
the output included this message multiple times:
(xsane:5424): Gtk-WARNING **: GtkSpinButton: setting an adjustment with non-zero page size is deprecated

I have run strace -o strace.out -f scanimage -T
The output is rather large and I can't determine any action to take from its results.

I still have the error whether I open xsane using sudo or not.

can anyone help me with any further advice or things to try?

Thank you for your help.