Clues: 1. This was an "Erase disk and install Ubuntu" installation from a USB stick, with "Install updates" and "Install this third-party software" both checked.
2. While the problem was happening: - some applications in Main showed up in USC with icons - some applications in Main, such as Thunderbird and Pidgin, showed up without icons - the screen for anything in Main said "Available from the 'main' source ( Use This Source)" - "Use This Source" triggered an apport dialog - apport refused to report a bug as described. 3. The problem went away completely as soon as Ivanka chose "Use This Source" for an application in Universe. (So I guess "sudo apt-get update" would have fixed it too.) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/751628 Title: Can't install from software centre: "this is not a genuine ubuntu package" -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs