I got the same error message. I'm using Ubuntu 12.10 and upgrading to 13.04 Raring Alpha 2.
The message I received was about gconf2. Did you receive this message about the same package as well? Or should I report an entirely new bug? ** Attachment added: "Hand-crafted log of currently running upgrade" https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1165776/+attachment/3628723/+files/upgrade-error.txt ** Tags added: gconf2 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1165776 Title: In the process of upgrading from 12.04 to 12.10 the following messageappeared. subprocess installed post-installation script returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1165776/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs