Mod_python error: "PythonHandler swlib.DynamicHandler"

Traceback (most recent call last):

  File "/usr/local/lib/python2.3/site-packages/mod_python/apache.py", line 299, in HandlerDispatch
    result = object(req)

  File "/usr/local/lib/python2.3/site-packages/swlib/DynamicHandler.py", line 410, in handler
    return handlerObj.handler(req)

  File "/usr/local/lib/python2.3/site-packages/swlib/DynamicHandler.py", line 384, in handler
    result = mhandler(dhReq)

  File "/home/www/mindswap/html/manage/forms/news.py", line 146, in html
    showPreview(req)

  File "/home/www/mindswap/html/manage/forms/news.py", line 71, in showPreview
    person = ls[0][0]

IndexError: list index out of range