Broke my IDLE!

[Adam W.]

Tried running IDEL from the command prompt to get this:

Traceback (most recent call last):
  File "c:\Python25\Lib\idlelib\idle.pyw", line 21, in <module>
    idlelib.PyShell.main()
  File "c:\Python25\lib\idlelib\PyShell.py", line 1404, in main
    shell = flist.open_shell()
  File "c:\Python25\lib\idlelib\PyShell.py", line 275, in open_shell
    self.pyshell = PyShell(self)
  File "c:\Python25\lib\idlelib\PyShell.py", line 813, in __init__
    OutputWindow.__init__(self, flist, None, None)
  File "c:\Python25\lib\idlelib\OutputWindow.py", line 16, in __init__
    EditorWindow.__init__(self, *args)
  File "c:\Python25\lib\idlelib\EditorWindow.py", line 125, in
__init__
    self.apply_bindings()
  File "c:\Python25\lib\idlelib\EditorWindow.py", line 900, in
apply_bindings
    text.event_add(event, *keylist)
  File "c:\Python25\lib\idlelib\MultiCall.py", line 345, in event_add
    widget.event_add(self, virtual, seq)
  File "c:\Python25\lib\lib-tk\Tkinter.py", line 1357, in event_add
    self.tk.call(args)
_tkinter.TclError: extra characters after detail in binding

What do I need to edit and change?