diff -r eca161a355d4 Lib/tkinter/__init__.py
--- a/Lib/tkinter/__init__.py	Sat May 14 21:29:03 2016 -0700
+++ b/Lib/tkinter/__init__.py	Sun May 15 12:18:43 2016 +0300
@@ -431,6 +431,7 @@ class Misc:
         if self._tclCommands is not None:
             for name in self._tclCommands:
                 #print '- Tkinter: deleted command', name
+                self.tk.call('after', 'cancel', name)
                 self.tk.deletecommand(name)
             self._tclCommands = None
     def deletecommand(self, name):
@@ -616,13 +617,16 @@ class Misc:
         given as first parameter."""
         try:
             data = self.tk.call('after', 'info', id)
+        except TclError:
+            return
+        self.tk.call('after', 'cancel', id)
+        try:
             # In Tk 8.3, splitlist returns: (script, type)
             # In Tk 8.4, splitlist may return (script, type) or (script,)
             script = self.tk.splitlist(data)[0]
             self.deletecommand(script)
         except TclError:
             pass
-        self.tk.call('after', 'cancel', id)
     def bell(self, displayof=0):
         """Ring a display's bell."""
         self.tk.call(('bell',) + self._displayof(displayof))