--- /Users/kevin/Python-2.7.3/Lib/idlelib/configDialog.py	2012-04-09 19:07:30.000000000 -0400
+++ /Users/kevin/Python-2.7.3/Lib/idlelib/configDialog-new.py	2012-10-11 23:21:54.000000000 -0400
@@ -832,8 +832,9 @@
             fontWeight=tkFont.BOLD
         else:
             fontWeight=tkFont.NORMAL
-        self.editFont.config(size=self.fontSize.get(),
-                weight=fontWeight,family=fontName)
+        ###workaround for crash on Tk-Cocoa
+        newFont = (fontName, self.fontSize.get(), fontWeight)
+        self.labelFontSample.config(font = newFont)
 
     def SetHighlightTarget(self):
         if self.highlightTarget.get()=='Cursor': #bg not possible