diff -r 40e1be1e0707 Lib/idlelib/EditorWindow.py
--- a/Lib/idlelib/EditorWindow.py	Sat Jan 14 15:45:13 2012 -0800
+++ b/Lib/idlelib/EditorWindow.py	Sat Jan 14 23:00:08 2012 -0600
@@ -259,18 +259,13 @@
         # IOBinding implements file I/O and printing functionality
         self.io = io = self.IOBinding(self)
         io.set_filename_change_hook(self.filename_change_hook)
-        self.good_load = False
         self.set_indentation_params(False)
         self.color = None # initialized below in self.ResetColorizer
         if filename:
             if os.path.exists(filename) and not os.path.isdir(filename):
                 if io.loadfile(filename):
-                    self.good_load = True
                     is_py_src = self.ispythonsource(filename)
                     self.set_indentation_params(is_py_src)
-                    if is_py_src:
-                        self.color = color = self.ColorDelegator()
-                        per.insertfilter(color)
             else:
                 io.set_filename(filename)
         self.ResetColorizer()
diff -r 40e1be1e0707 Lib/idlelib/FileList.py
--- a/Lib/idlelib/FileList.py	Sat Jan 14 15:45:13 2012 -0800
+++ b/Lib/idlelib/FileList.py	Sat Jan 14 23:00:08 2012 -0600
@@ -33,12 +33,7 @@
             # Don't create window, perform 'action', e.g. open in same window
             return action(filename)
         else:
-            edit = self.EditorWindow(self, filename, key)
-            if edit.good_load:
-                return edit
-            else:
-                edit._close()
-                return None
+            return self.EditorWindow(self, filename, key)
 
     def gotofileline(self, filename, lineno=None):
         edit = self.open(filename)