> In the logfile of the backend I see that the option > tstbackend is complaining about is not active: > > [microtek2] sane_control_option: option 21; action 1 > [microtek2] sane_control_option: option 21 not active > > Therefore sane_control_option fails with SANE_STATUS_INVAL.
tstbackend, for some reason, thinks the option is settable. That might be the bug Hennig reported a while ago. Are you using the latest version? Frank.
