Builder/LeftTree.js

diff --git a/Builder/LeftTree.js b/Builder/LeftTree.js
index 736c4d1..226746d 100755 (executable)
--- a/Builder/LeftTree.js
+++ b/Builder/LeftTree.js
@@ -645,7 +645,9 @@ LeftTree = new XObject(
                                 this.treemap = { }; 
                                 
                                 iter = new Gtk.TreeIter();
-                                this.el.get_iter_first(iter);
+                                if (!this.el.get_iter_first(iter)) {
+                                    return [];
+                                }
                                 first = true;
                             }