diff -r 6297fcddf912 Lib/idlelib/EditorWindow.py
--- a/Lib/idlelib/EditorWindow.py	Fri Apr 19 12:57:54 2013 -0400
+++ b/Lib/idlelib/EditorWindow.py	Fri Apr 19 21:42:12 2013 -0500
@@ -321,6 +321,8 @@
                         per.insertfilter(color)
             else:
                 io.set_filename(filename)
+                self.good_load = True
+
         self.ResetColorizer()
         self.saved_change_hook()
         self.update_recent_files_list()