Migrating SE 1.0 to OSQA SX Importer Database Error

I'm (finally!) migrating from SE 1.0 to OSQA for Merspi.com.au and I'm running intro some troubles with /admin/sximporter and importing the StackExchange database dump.

Here's the debug error message as below,

Environment:

Request Method: POST
Request URL: http://merspi.com.au/admin/sximporter/
Django Version: 1.2.4
Python Version: 2.6.5
Installed Applications:
['django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.sites',
 'django.contrib.admin',
 'django.contrib.humanize',
 'django.contrib.sitemaps',
 'django.contrib.markup',
 'forum',
 'south']
Installed Middleware:
['django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'forum.middleware.extended_user.ExtendedUser',
 'forum.middleware.anon_user.ConnectToSessionMessagesMiddleware',
 'forum.middleware.request_utils.RequestUtils',
 'forum.middleware.cancel.CancelActionMiddleware',
 'forum.middleware.admin_messages.AdminMessagesMiddleware',
 'django.middleware.transaction.TransactionMiddleware']

Traceback:
File "/home/merspi/webapps/merspi/lib/python2.6/django/core/handlers/base.py" in get_response
  100.                     response = callback(request, *callback_args, **callback_kwargs)
File "/home/merspi/webapps/merspi/osqa/forum_modules/sximporter/views.py" in sximporter
  31.             importer.sximport(extract_to, options)
File "/home/merspi/webapps/merspi/osqa/forum_modules/sximporter/importer.py" in sximport
  917.     uidmap = userimport(dump, options)
File "/home/merspi/webapps/merspi/osqa/forum_modules/sximporter/importer.py" in userimport
  347.     readTable(path, "Users", callback)
File "/home/merspi/webapps/merspi/osqa/forum_modules/sximporter/importer.py" in readTable
  90.     parser.parse(f)
File "/usr/local/lib/python2.6/xml/sax/expatreader.py" in parse
  107.         xmlreader.IncrementalParser.parse(self, source)
File "/usr/local/lib/python2.6/xml/sax/xmlreader.py" in parse
  123.             self.feed(buffer)
File "/usr/local/lib/python2.6/xml/sax/expatreader.py" in feed
  207.             self._parser.Parse(data, isFinal)
File "/usr/local/lib/python2.6/xml/sax/expatreader.py" in end_element
  304.         self._cont_handler.endElement(name)
File "/home/merspi/webapps/merspi/osqa/forum_modules/sximporter/importer.py" in endElement
  73.             self.callback(self.el_data)
File "/home/merspi/webapps/merspi/osqa/forum_modules/sximporter/importer.py" in callback
  224.                 osqau = orm.User.objects.get(id=authenticated_user.id)
File "/home/merspi/webapps/merspi/lib/python2.6/django/db/models/manager.py" in get
  132.         return self.get_query_set().get(*args, **kwargs)
File "/home/merspi/webapps/merspi/lib/python2.6/django/db/models/query.py" in get
  342.         num = len(clone)
File "/home/merspi/webapps/merspi/lib/python2.6/django/db/models/query.py" in __len__
  80.                 self._result_cache = list(self.iterator())
File "/home/merspi/webapps/merspi/lib/python2.6/django/db/models/query.py" in iterator
  271.         for row in compiler.results_iter():
File "/home/merspi/webapps/merspi/lib/python2.6/django/db/models/sql/compiler.py" in results_iter
  677.         for rows in self.execute_sql(MULTI):
File "/home/merspi/webapps/merspi/lib/python2.6/django/db/models/sql/compiler.py" in execute_sql
  732.         cursor.execute(sql, params)
File "/home/merspi/webapps/merspi/lib/python2.6/django/db/backends/util.py" in execute
  15.             return self.cursor.execute(sql, params)
File "/home/merspi/webapps/merspi/lib/python2.6/django/db/backends/postgresql_psycopg2/base.py" in execute
  44.             return self.cursor.execute(query, args)

Exception Type: DatabaseError at /admin/sximporter/
Exception Value: current transaction is aborted, commands ignored until end of transaction block

Thanks in advance.