2.0.10 crash in fetchone() in a DictCursor

A script I've been using up through 2.0.8 no longer works in 2.0.10.

Traceback (most recent call last):
  File "/sm/script/diffscan.py", line 75, in ?
    testlog1_dict = curs.fetchone()
  File "//usr/lib/python2.4/site-packages/psycopg2/extras.py", line
53, in fetchone
    self._build_index()
  File "//usr/lib/python2.4/site-packages/psycopg2/extras.py", line
189, in _build_index
    for item in self.description:
  File "//usr/lib/python2.4/site-packages/psycopg2/extras.py", line
199, in __setitem__
    if type(name) == type(0):
  File "//usr/lib/python2.4/site-packages/psycopg2/extras.py", line
199, in __setitem__
    if type(name) == type(0):
  File "//usr/lib/python2.4/site-packages/psycopg2/extras.py", line
199, in __setitem__
    if type(name) == type(0):
  File "//usr/lib/python2.4/site-packages/psycopg2/extras.py", line
199, in __setitem__
    if type(name) == type(0):
  File "//usr/lib/python2.4/site-packages/psycopg2/extras.py", line
199, in __setitem__
    if type(name) == type(0):
  File "//usr/lib/python2.4/site-packages/psycopg2/extras.py", line
199, in __setitem__
    if type(name) == type(0):
  File "//usr/lib/python2.4/site-packages/psycopg2/extras.py", line
199, in __setitem__
    if type(name) == type(0):
  File "//usr/lib/python2.4/site-packages/psycopg2/extras.py", line
199, in __setitem__
    if type(name) == type(0):
  File "//usr/lib/python2.4/site-packages/psycopg2/extras.py", line
199, in __setitem__
    if type(name) == type(0):
  File "//usr/lib/python2.4/site-packages/psycopg2/extras.py", line
199, in __setitem__
    if type(name) == type(0):
  File "//usr/lib/python2.4/site-packages/psycopg2/extras.py", line
199, in __setitem__
    if type(name) == type(0):
  File "//usr/lib/python2.4/site-packages/psycopg2/extras.py", line
199, in __setitem__
    if type(name) == type(0):
  File "//usr/lib/python2.4/site-packages/psycopg2/extras.py", line
199, in __setitem__
    if type(name) == type(0):
  File "//usr/lib/python2.4/site-packages/psycopg2/extras.py", line
199, in __setitem__
    if type(name) == type(0):
  File "//usr/lib/python2.4/site-packages/psycopg2/extras.py", line
199, in __setitem__
    if type(name) == type(0):
  File "//usr/lib/python2.4/site-packages/psycopg2/extras.py", line
199, in __setitem__
    if type(name) == type(0):
  File "//usr/lib/python2.4/site-packages/psycopg2/extras.py", line
199, in __setitem__
    if type(name) == type(0):
  File "//usr/lib/python2.4/site-packages/psycopg2/extras.py", line
199, in __setitem__
    if type(name) == type(0):
  File "//usr/lib/python2.4/site-packages/psycopg2/extras.py", line
199, in __setitem__
    if type(name) == type(0):
  File "//usr/lib/python2.4/site-packages/psycopg2/extras.py", line
199, in __setitem__
    if type(name) == type(0):
  File "//usr/lib/python2.4/site-packages/psycopg2/extras.py", line
199, in __setitem__
    if type(name) == type(0):
  File "//usr/lib/python2.4/site-packages/psycopg2/extras.py", line
199, in __setitem__
    if type(name) == type(0):
  File "//usr/lib/python2.4/site-packages/psycopg2/extras.py", line
199, in __setitem__
    if type(name) == type(0):
  File "//usr/lib/python2.4/site-packages/psycopg2/extras.py", line
199, in __setitem__
    if type(name) == type(0):
  File "//usr/lib/python2.4/site-packages/psycopg2/extras.py", line
199, in __setitem__
    if type(name) == type(0):
  File "//usr/lib/python2.4/site-packages/psycopg2/extras.py", line
199, in __setitem__
    if type(name) == type(0):
  File "//usr/lib/python2.4/site-packages/psycopg2/extras.py", line
199, in __setitem__
    if type(name) == type(0):
  File "//usr/lib/python2.4/site-packages/psycopg2/extras.py", line
199, in __setitem__
    if type(name) == type(0):
  File "//usr/lib/python2.4/site-packages/psycopg2/extras.py", line
199, in __setitem__
    if type(name) == type(0):
  File "//usr/lib/python2.4/site-packages/psycopg2/extras.py", line
199, in __setitem__
    if type(name) == type(0):
  File "//usr/lib/python2.4/site-packages/psycopg2/extras.py", line
200, in __setitem__
    name = self._column_mapping[name]
IndexError: list index out of range


Here's how I created the cursor:

curs = db.cursor(cursor_factory = psycopg2.extras.RealDictCursor)

What can I do to debug this?

~ Nathan