[CinePaint] cinepaint on ubuntu feisty

I've just installed cinepaint on my system (via synaptics), but it hang 
during startup (script-fu) with this error:

/usr/lib/cinepaint/0.21-2/plug-ins/script-fu
cinepaint fatal error: sigsegv caught
cinepaint (pid:25394): [E]xit, [H]alt, show [S]tack trace or [P]roceed:
cinepaint terminated: sigint caught

/usr/lib/cinepaint/0.21-2/plug-ins/script-fu: Interrupt caught

Gtk-CRITICAL **: file gtkwidget.c: line 1387 (gtk_widget_destroy):
assertion `widget != NULL' failed.

Gtk-WARNING **: invalid cast from (NULL) pointer to `GtkObject'

Gtk-CRITICAL **: file gtkobject.c: line 235 (gtk_object_destroy):
assertion `object != NULL' failed.

Gtk-WARNING **: invalid cast from (NULL) pointer to `GtkObject'

Gtk-CRITICAL **: file gtkobject.c: line 1171 (gtk_object_unref):
assertion `object != NULL' failed.

Any sugestions?

PS I'm running feisty in AMD64


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