Re: [gscan2pdf-help] scantpaper v3.0.0 released

[Jeff <jf...@po...>]

Hi Martin,

On 19/03/2026 14:58, Martin Herrnkind wrote:
> The first thing I noticed was an error message when launching Scantpaper 
> from the console:
> "Error retrieving scanner options: expected string or bytes-like object, 
> got ‘NoneType’"

Please start scantpaper from the command line with the --log=log option, 
reproduce the above error, quit, and post me the log file, which 
scantpaper should have compressed with xz. I'll take a look.

> Subjectively, Scantpaper seems to me to work more slowly than GScan2pdf 
> when loading files and performing text recognition.

Thanks. Once we have shaken out the important bugs, we can take a look 
at performance issues. It is possible that using SQLite as a file store 
is enough of an overhead to be noticeable.

> When loading JPG files, I receive the following error messages for each 
> file or page (excerpt for illustrative purposes):*
> "WARNING:py.warnings:/usr/lib/python3/dist-packages/gi/ 
> _propertyhelper.py:220: Warning: value "137" of type 'gint' is invalid 
> or out of range for property 'page-number-start' of type 'gint'
>    instance.set_property(self.name, value)

Yes. I've spotted that, too. They are harmless warnings, but annoying. 
I'll get to them at some point soon.

> When using Scantpaper, I receive the following error messages (excerpt 
> for illustrative purposes):*
> Estimating resolution as 765
> ERROR:tools_menu_mixins:Can't display page with uuid 13: page not found

That I hadn't been able to reproduce reliably. I'll do some more testing 
and get back to you.

> When saving, the following error messages appear:*
> (com.github.scantpaper:266239): Gtk-WARNING **: 13:25:07.349: Failed to 
> measure available space: Fehler beim Einlesen der Dateisystem- 
> Information für /home/martin/pCloudDrive: Der Socket ist nicht verbunden
> 
> [ I specified a completely different save location than “/home/martin/ 
> pCloudDrive” ]
> However, the GUI shows: “2257 of 1000 being processed (save_pdf)”
> 
> 
> *The saving process ends without completing, displaying the error message:*
> ERROR:basethread:Error running process 'save_pdf':
> ERROR:session_mixins:Error running 'error' callback for 'save_pdf' process:

Can you give me a log file as above, please.

Regards

Jeff