[Qgis-user] QGIS 3.34 and QGZ on network drives

[Thomas Schüttenberg]

Hi Andrea,

thanks for pointing me to libzip.
In addition to the mentioned error message in the QGIS log panel "error code 28" is displayed. A web search revealed, that this might refer to [ZIP_ER_OPNOTSUPP] Operation not supported (https://libzip.org/documentation/zip_errors.html).

Checking for related libzip issues I get this one https://github.com/nih-at/libzip/issues/382 and maybe this https://github.com/nih-at/libzip/issues/381 - but this is beyond my understanding.

The only other or older libzip version available in osgeo4w is v1.7.3. 
Exchanging the current bin/zipp.dll (libzip v1.10.1) from the QGIS 3.34.6 install with a zip.dll of a QGIS 3.34.5 install (or older), which should be v1.7.3, does solve the problem (for now). - So the problem lies within the libzip 1.10.1 version.

But the upstream issue remains and will re-occur in upcoming QGIS releases. So far I have no idea on how to support the fixing (apart from contributing to #382).

All the best
Thomas


> Andrea Giudiceandrea via QGIS-User <qgis-user at lists.osgeo.org> hat am 02.05.2024 21:52 CEST geschrieben:
> 
>  
> > Thomas Schüttenberg thomas at qgis.de
> > Thu May 2 07:12:35 PDT 2024
> > All findings described below refer to QGIS 3.34.6. 
> > I am affraid it is connected to the extensive updates liste here https://lists.osgeo.org/pipermail/qgis-user/2024-April/054334.html ?
> 
> > Thu May 2 05:44:11 PDT 2024
> > "Unable to unzip file '<file path to project.qgz>'" is displayed and the project does not open.
> 
> 
> 
> Hi Thomas,
> AFAIK the error message is displayed when the zip_open function of the 
> libzip library, used by QGIS, fails to open the .qgz project file.
> Are there other related error messages in the Log Messages panel?
> 
> Since you think the issue may be related to the recent OSGeo4W packages 
> update, have you tried to downgrade the libzip library using the OSGeo4W 
> Setup program to the previous version?
> 
> Best regards.
> 
> Andrea
> _______________________________________________
> QGIS-User mailing list
> QGIS-User at lists.osgeo.org
> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user