gthumb close after removing same files

When I try to find the same file in gthumb and remove it . Gthumb will close and I get this error . Dose any one know how to fix it (gthumb:10658): Gtk-WARNING **: Failed to register client: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files (gthumb:10658): GLib-GIO-CRITICAL **: g_file_new_for_path: assertion 'path != NULL' failed (gthumb:10658): GLib-GIO-CRITICAL **: g_file_get_uri: assertion 'G_IS_FILE (file)' failed (gthumb:10658): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT (object)' failed Gtk-Message: GtkDialog mapped without a transient parent. This is discouraged. (gthumb:10658): GLib-GObject-WARNING **: invalid cast from 'GtkDialog' to 'GthBrowser' Segmentation fault -- William Biggs bbiggs(a)fastmail.com