Comment 2 for bug 1055464

Part of the issue here is the rhythmbox apport source package hook which contains the following:

    # Check to see if the stacktrace is a webkit or libubuntuone issue
    # if it is, then reassign to the Ubuntu One Music Store
    stacktrace = report.get("Stacktrace", None)
    if stacktrace:
        if "ubuntuone" in stacktrace or "webkit" in stacktrace:
            report.add_package_info("rhythmbox-ubuntuone-music-store")
            return

However, apport shouldn't crash if the package doesn't exist. I'll open a rhythmbox task for fixing the source package hook.