HI Sebastien, thanks for the additional information.
> I'm having the same error, always with my default locale fr_FR.UTF-8, only on > the second start with C locale and french language selected. Can you try the experiment I posted to the bug report, please: * backup /usr/share/calibre/localization/locales.zip * replace it by the file downloaded from http://www.preining.info/locales.zip With this change, does calibre start consistently and without crashes? Norbert -- PREINING Norbert http://www.preining.info Accelia Inc. + JAIST + TeX Live + Debian Developer GPG: 0x860CDC13 fp: F7D8 A928 26E3 16A1 9FA0 ACF0 6CAC A448 860C DC13