REF : AssertionError: SRE module mismatch

Hi,
I am using python-2.2.2, with jython-20030225, however I am getting the
following problem:
import os
after executing the line below I keep getting the problems.
res = os.listdir(a)

File "D:\H-Drive-content\download\jython\jython-20030225\Lib\javaos.py", line 
104, in ?  
File "D:\H-Drive-content\download\jython\jython-20030225\Lib\javashell.py", 
line 16, in ?   
File "D:\H-Drive-content\download\python\Lib\re.py", line 27, in ?   
File "D:\H-Drive-content\download\python\Lib\sre.py", line 97, in ?   
File "D:\H-Drive-content\download\python\Lib\sre_compile.py", line 17, in ? 
AssertionError: SRE module mismatch

Can you please point tell me what is the cause of the problem, this is the 
first time  I have used the os.py class

The PYTHONPATH is set to the following values
D:\H-Drive-content\download\python-2.2.2\Lib;D:\H-Drive-content\download\jython\jython-20030225\Lib

Your prompt response is greatly appreciated.

Rami



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