Fixes for the Mac. (Jack)
diff --git a/Lib/tkinter/Tkinter.py b/Lib/tkinter/Tkinter.py
index 287c063..dbf59b1 100755
--- a/Lib/tkinter/Tkinter.py
+++ b/Lib/tkinter/Tkinter.py
@@ -667,7 +667,11 @@
 		try:
 			# Disable event scanning except for Command-Period
 			import MacOS
-			MacOS.EnableAppswitch(0)
+			try:
+				MacOS.SchedParams(1, 0)
+			except AttributeError:
+				# pre-1.5, use old routine
+				MacOS.EnableAppswitch(0)
 		except ImportError:
 			pass
 		else: