The upgrade to 13.10 stops after a lot of error messages about texlive packages, that I could close. The upgrade goes then further, but now it is stopped.

What can I do to initiate the process again?

The following are the last messages from the command window.:

g multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/30-cjk-aliases.conf", line 47: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/30-cjk-aliases.conf", line 47: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/30-cjk-aliases.conf", line 47: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/30-cjk-aliases.conf", line 47: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/30-cjk-aliases.conf", line 59: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/30-cjk-aliases.conf", line 59: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/30-cjk-aliases.conf", line 59: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/30-cjk-aliases.conf", line 59: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/30-cjk-aliases.conf", line 59: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/30-cjk-aliases.conf", line 72: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/30-cjk-aliases.conf", line 86: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/30-cjk-aliases.conf", line 86: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/30-cjk-aliases.conf", line 86: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/30-cjk-aliases.conf", line 98: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/30-cjk-aliases.conf", line 98: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/30-cjk-aliases.conf", line 109: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/30-cjk-aliases.conf", line 116: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/30-cjk-aliases.conf", line 130: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/30-cjk-aliases.conf", line 130: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/30-cjk-aliases.conf", line 130: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/30-cjk-aliases.conf", line 130: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/30-cjk-aliases.conf", line 130: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/30-cjk-aliases.conf", line 130: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/30-cjk-aliases.conf", line 138: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/30-cjk-aliases.conf", line 146: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/30-cjk-aliases.conf", line 157: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/30-cjk-aliases.conf", line 157: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/30-cjk-aliases.conf", line 157: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/30-cjk-aliases.conf", line 157: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/30-cjk-aliases.conf", line 165: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/30-cjk-aliases.conf", line 173: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/30-cjk-aliases.conf", line 182: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/30-cjk-aliases.conf", line 182: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/99-language-selector-zh.conf", line 11: Having multiple values in <test> isn't supported and may not work as expected
ERROR: error('unpack requires a bytes object of length 4',)

(apport-gtk:16828): Gtk-CRITICAL **: gtk_main_quit: assertion 'main_loops != NULL' failed