From 1939e83a653b3263eeac820a9e36d751a314068b Mon Sep 17 00:00:00 2001
From: Juan Linietsky <reduzio@gmail.com>
Date: Tue, 8 Aug 2017 07:13:17 -0300
Subject: Attempt to resolve #4673

---
 editor/plugins/canvas_item_editor_plugin.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/editor/plugins/canvas_item_editor_plugin.cpp b/editor/plugins/canvas_item_editor_plugin.cpp
index f5d9da195a..a10a367db8 100644
--- a/editor/plugins/canvas_item_editor_plugin.cpp
+++ b/editor/plugins/canvas_item_editor_plugin.cpp
@@ -1390,7 +1390,12 @@ void CanvasItemEditor::_viewport_gui_input(const Ref<InputEvent> &p_event) {
 		while ((n && n != scene && n->get_owner() != scene) || (n && !n->is_class("CanvasItem"))) {
 			n = n->get_parent();
 		};
-		c = n->cast_to<CanvasItem>();
+
+		if (n) {
+			c = n->cast_to<CanvasItem>();
+		} else {
+			c = NULL;
+		}
 
 		// Select the item
 		additive_selection = b->get_shift();
-- 
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