[Boa Constr] Error on start up's message : Global name 'string' is not defined

[LANDAIS L. S. <loi...@la...>]

With Windows 2000 and Python 2.3 / wxPythonWin32 2.4.1.2 unicode / Bo=
a 0.20
:
the error on start up's message " Global name 'string'  is not define=
d "
appears after starting Boa up to running  main ...

Thanks for your help.
Loik