I can confirm this bug on Feisty. The terminal output is:
** (zapping:25430): WARNING **: GConf key '/apps/zapping/plugins/deinterlace/method' is unset and has no default. Schemas incomplete or not installed?
/usr/share/themes/Blubuntu/gtk-2.0/gtkrc:169: Clearlooks configuration option "progressbarstyle" is not supported and will be ignored.
(zapping:25430): Gtk-CRITICAL **: gtk_list_store_get_value: assertion `VALID_ITER (iter, list_store)' failed
(zapping:25430): GLib-GObject-WARNING **: gtype.c:3339: type id `0' is invalid
(zapping:25430): GLib-GObject-WARNING **: can't peek value table for type `<invalid>' which is not currently referenced Segmentation fault (core dumped)
I can confirm this bug on Feisty. The terminal output is:
** (zapping:25430): WARNING **: GConf key '/apps/ zapping/ plugins/ deinterlace/ method' is unset and has no default. Schemas incomplete or not installed?
/usr/share/ themes/ Blubuntu/ gtk-2.0/ gtkrc:169: Clearlooks configuration option "progressbarstyle" is not supported and will be ignored.
(zapping:25430): Gtk-CRITICAL **: gtk_list_ store_get_ value: assertion `VALID_ITER (iter, list_store)' failed
(zapping:25430): GLib-GObject- WARNING **: gtype.c:3339: type id `0' is invalid
(zapping:25430): GLib-GObject- WARNING **: can't peek value table for type `<invalid>' which is not currently referenced
Segmentation fault (core dumped)