cPickle and HIGHEST_PROTOCO L problems

[Simon Dahlbacka]

I'm trying to cache some information using cPickle
and I thought that using cPickle.HIGHEST _PROTOCOL would give me an
efficient representation.

However,

when trying to load the information back I just keep getting a broken
pickle with EOF error from cPicle.load(fil e('myfile.pickl e','r'))

if I am not using cPickle.HIGHEST _PROTOCOL or -1 or 2 it seems to
work nicely, is this a bug or something else? (python 2.3.2 on winxp)

the information to be pickled is a dictionary of some strings and a
list of custom objects defined as:

class ErrorCode(objec t):
__slots__ = ['Name','Descrip tion']

def __init__(self, Name=None, Description=Non e):
self.Name = Name
self.Descriptio n = Description
def __getstate__(se lf):
return {"Name":Name , "Description":D escription}
def __setstate__(se lf, dict):
Name = dict['Name']
Description = dict['Description']