bug 706511 have a better stacktrace https://i62758765.restricted.launchpadlibrarian.net/62758765/Stacktrace.txt?token=ce3546657f68902cd87edca1928081f1
bug 706511 have a better stacktrace https:/ /i62758765. restricted. launchpadlibrar ian.net/ 62758765/ Stacktrace. txt?token= ce3546657f68902 cd87edca1928081 f1