Mod_python error: "PythonHandler mod_python.publisher"

Traceback (most recent call last):

  File "/usr/lib64/python2.4/site-packages/mod_python/apache.py", line 299, in HandlerDispatch
    result = object(req)

  File "/usr/lib64/python2.4/site-packages/mod_python/publisher.py", line 204, in handler
    module = page_cache[req]

  File "/usr/lib64/python2.4/site-packages/mod_python/cache.py", line 82, in __getitem__
    return self._checkitem(name)[2]

  File "/usr/lib64/python2.4/site-packages/mod_python/cache.py", line 124, in _checkitem
    value = self.build(key, name, opened, entry)

  File "/usr/lib64/python2.4/site-packages/mod_python/publisher.py", line 77, in build
    return ModuleCache.build(self, key, req, opened, entry)

  File "/usr/lib64/python2.4/site-packages/mod_python/cache.py", line 371, in build
    exec opened in module.__dict__

  File "/home/a/aquarion/sites/istic/character.istic.net/index.py", line 14, in ?
    from simpletal import simpleTAL, simpleTALES

ImportError: No module named simpletal