Blender 2.49b import error, python console

[F3LLA22]

Whenever I try to import or export a mesh from blender 2.49b I get this error in the python console:

from pyffi.formats.nif import NifFormat

File "C:\Python26\lib\site-packages\pyffi\formats\nif\__init__.py", line 348, in <module>

import pyffi.formats.bsa

File "C:\Python26\lib\site-packages\pyffi\formats\bsa\__init__.py", line 111, in <module>

class BsaFormat(pyffi.object_models.xml.FileFormat):

File "C:\Python26\lib\site-packages\pyffi\object_models\xml\__init__.py", line 94, in __init__

parser = xml.sax.make_parser()

File "C:\Python26\Lib\xml\sax\__init__.py", line 93, in make_parser

raise SAXReaderNotAvailable("No parsers found", None)

xml.sax._exceptions.SAXReaderNotAvailable: No parsers found

I'm using an old version of blender because someone told me that this version is recommended when making weapon animations.