I got home from work and figured out why gscan2pdf isn't working. The
printer isn't connecting to the system! I tried printing a test page and
the Printer State field runs between 'processing' and 'rendering completed'
but nothing prints. It is a wireless printer and I have no notes on setting
it up (why? I have NO idea) If you could please help and I will write the
notes down and then not bug you about it and possibly be able to help
others.

:-)~MIKE~(-:

On Wed, Oct 22, 2014 at 11:00 AM, Michael Havens <bmike1@gmail.com> wrote:

> I got a problem: after I open gscan2pdf an info window appears saying:
>
>    Save as DjVu requires djvulibre-bin
>    unpaper missing
>    OCR requires gocr, tesseract, ocropus, or cuneiform
>
> after I close that window the little progress bar then runs back and forth
> as it is "opening device".  Then an info window appears saying, :
>
>    "Error opening device: Invalid argument"
>
> It was working. It was doing this with gscan2pdf version 1.2.3 (the apt
> version) so I updated  it to version 1.2.6 but it was still doing it. I
> googled 'gscan2pdf "Error opening device: Invalid argument"' but their were
> only 4 results. The only one of which might have helped said to:
>
>    rm  ~/user/.gscan2pdf
>    rm: cannot remove ‘/home/bmike1/user/.gscan2pdf’: No such file or
>       directory
>
> I then  ran apt-get for the programs it said were missing and now only the
> "Error opening device: Invalid argument" info window appears.
>
> Any ideas as to how to resolve this?
>
> :-)~MIKE~(-:
>