Newbie TypeError problem

[Francis Moore]

Hi,

Getting the following traceback from parsing an xml file:

Traceback (most recent call last):
  File "D:\Python23\lib\site-packages\Pythonwin\pywin\framework\scriptutils.py",
line 310, in RunScript
    exec codeObject in __main__.__dict__
  File "D:\Development\OmniForm Converter\OFML to SHF\ListFile.py",
line 74, in ?
    try:
  File "D:\Python23\lib\xml\sax\expatreader.py", line 107, in parse
    xmlreader.IncrementalParser.parse(self, source)
  File "D:\Python23\lib\xml\sax\xmlreader.py", line 119, in parse
    self.prepareParser(source)
  File "D:\Python23\lib\xml\sax\expatreader.py", line 111, in
prepareParser
    self._parser.SetBase(source.getSystemId())
TypeError: SetBase() argument 1 must be string, not member_descriptor

Seems to be failing on the line:

parser.parse(file)

But I can't see what the problem is. The program worked successfully
and I don't remember changing anything major, so I can't understand
what it's complaining about. Looking at expatreader.py hasn't really
helped as my Python knowledge isn't that great yet.

Any help much appreciated.

Thanks,
Francis.