diff -up easystroke-0.6.0/prefs.cc.fix-no-select-crash easystroke-0.6.0/prefs.cc

--- easystroke-0.6.0/prefs.cc.fix-no-select-crash	2019-10-18 14:44:45.866097719 -0400

+++ easystroke-0.6.0/prefs.cc	2019-10-18 14:45:20.057369624 -0400

@@ -426,6 +426,8 @@ void Prefs::on_edit_extra() {

 	etv->get_cursor(path, col);

 	if (!path.gobj())

 		return;

+	if (path.empty())

+		return;

 	Gtk::TreeIter iter = *etm->get_iter(path);

 	std::vector<ButtonInfo>::iterator i = (*iter)[ecs.i];

 	SelectButton sb(*i, true, true);

@@ -448,6 +450,8 @@ void Prefs::on_remove_extra() {

 	etv->get_cursor(path, col);

 	if (!path.gobj())

 		return;

+	if (path.empty())

+		return;

 	Gtk::TreeIter iter = *etm->get_iter(path);

 	Atomic a;

 	std::vector<ButtonInfo>::iterator i = (*iter)[ecs.i];