Builder/Provider/File/Gtk.js

diff --git a/Builder/Provider/File/Gtk.js b/Builder/Provider/File/Gtk.js
index 089b9f5..9cb324b 100755 (executable)
--- a/Builder/Provider/File/Gtk.js
+++ b/Builder/Provider/File/Gtk.js
@@ -100,7 +100,10 @@ Gtk = XObject.define(
             _this.parent =  cfg.parent;
             _this.title =  cfg.title;
             _this.items = cfg.items || []; 
-            cb();
+            if (cb) {
+                cb();
+               }
+            
                 
                 // update to new JSDOC api!?
                 /*