[DB-SIG] shelve and hash function

[roy]

I have a small app running under python 2.3, and I am trying to port this to a 
notebook running python 2.3.1.

The trouble is that there are some data files using shelves to store objects, 
and there seems to be a compatibility problem.

The error message I get is:-

  File "/usr/lib/python2.3/bsddb/__init__.py", line 192, in hashopen
    d.open(file, db.DB_HASH, flags, mode)
DBInvalidArgError: (22, 'Invalid argument -- data/foods: unsupported hash 
version: 8')

Does this mean that an app using shelves is not really portable?
How can I make the data files in a form that they can be opened in any version 
of Python?

Does anyone have any experience with this kind of problem?

Thank you
  --roy