@andrews: My '/var/lib/dpkg/available' was fine, so this was not a solution. I was able to downgrade debconf since I still had the Maverick repositories in my sources, so I could downgrade the package via Synaptic.
I have managed to solve the problem by commenting out lines 26-28 in file '/usr/share/perl5/Debconf/FrontEnd/Gnome.pm'. The lines now look like this: # if ($this->logo) { # $this->assistant->set_page_header_image($this->assistant_page, $this->logo); # } Everything seems fine now, no more terminal errors while installing or uninstalling certain packages via Synaptic. I cannot guarantee that this is safe though. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/721738 Title: Gtk-CRITICAL **: IA__gtk_assistant_set_page_header_image: assertion `child != NULL' failed at /usr/share/perl5/Debconf/FrontEnd/Gnome.pm line 27. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs