failed to upgrade from Kubuntu 9.10 to 10.04

[Coen]

Binary package hint: update-manager

E:Subprocess /usr/bin/dkpg returned an error code (1)
This message was shown 4 times

[Coen (c-blijker)]

See attachment for all files in var/log/dist-upgrade.
The upgrade already had given a warning about python2.6-minimal which couldn't be configured. I don't whether that's related..

Happy hunting.. :-(

I'll do a fresh install for now.

[Jean-Baptiste Lallement (jibel)]

Thanks for your report.*

The relevant error is
---
Instellen van python2.6-minimal (2.6.5-1ubuntu6) ...

pycentral: pycentral rtinstall: package python-mapnik: Not overwriting local files:

   dpkg: /usr/lib/python2.6/dist-packages/mapnik/__init__.py not found.

   dpkg: /usr/lib/python2.6/dist-packages/mapnik/ogcserver/WMS.py not found.

   dpkg: /usr/lib/python2.6/dist-packages/mapnik/ogcserver/__init__.py not found.

   dpkg: /usr/lib/python2.6/dist-packages/mapnik/ogcserver/cgiserver.py not found.

   dpkg: /usr/lib/python2.6/dist-packages/mapnik/ogcserver/common.py not found.

   dpkg: /usr/lib/python2.6/dist-packages/mapnik/ogcserver/configparser.py not found.

   dpkg: /usr/lib/python2.6/dist-packages/mapnik/ogcserver/exceptions.py not found.

   dpkg: /usr/lib/python2.6/dist-packages/mapnik/ogcserver/modserver.py not found.

   dpkg: /usr/lib/python2.6/dist-packages/mapnik/ogcserver/wms111.py not found.

   dpkg: /usr/lib/python2.6/dist-packages/mapnik/ogcserver/wms130.py not found.

   dpkg: /usr/lib/python2.6/dist-packages/mapnik/ogcserver/wsgi.py not found.

   dpkg: /usr/lib/python2.6/dist-packages/mapnik/paths.py not found.

This happens when you install a python module and pycentral refuses to overwrite it. This is already reported in bug 291262.
I'm marking this report as duplicate.
Don't hesitate to submit any new bug.