Problem Re-running wxPython script under PythonWin

[Mike Brenner]

Double clicking on various wxPython scripts 
in Windows (NT, ME, 95, and 2000) works.

However, those same scripts, fail to run a 
second time when run from the 
Python WIndows Extensions Editor and Debugger.

The second time they are run they get the 
error message:

  PythonWin has caused an error in PYTHON21.DLL.
  Pythonwin will now close.

At that point you cannot close the Pythonwin
window or click or press escape. However,
you can ctl-alt-delete and close the task.

An example of the source code that does this
is pythonDialogUnits.py 
in the wxPython demo directory.

I am running the following:
  Python2.1
  Pythonwin win32all build 139
  wxPY2.2
  wxPYTHON-2.25-PY21.exe

Has anyone seen these symptoms and 
knows how to make the programs run
a second time using control-R in
the PythonWin editor without
crashing PythonWin?

Thanks,
Mike Brenner