Problem installing fixture '../dumpdata.json': Traceback (most recent call last):
  File "c:\Python26\lib\site-packages\django\core\management\commands\loaddata.py", line 174, in handle
    obj.save(using=using)
  File "c:\Python26\lib\site-packages\django\core\serializers\base.py", line 165, in save
    models.Model.save_base(self.object, using=using, raw=True)
  File "c:\Python26\lib\site-packages\django\db\models\base.py", line 526, in save_base
    rows = manager.using(using).filter(pk=pk_val)._update(values)
  File "c:\Python26\lib\site-packages\django\db\models\query.py", line 491, in _update
    return query.get_compiler(self.db).execute_sql(None)
  File "c:\Python26\lib\site-packages\django\db\models\sql\compiler.py", line 869, in execute_sql
    cursor = super(SQLUpdateCompiler, self).execute_sql(result_type)
  File "c:\Python26\lib\site-packages\django\db\models\sql\compiler.py", line 735, in execute_sql
    cursor.execute(sql, params)
  File "c:\Python26\lib\site-packages\django\db\backends\util.py", line 34, in execute
    return self.cursor.execute(sql, params)
  File "c:\Python26\lib\site-packages\django\db\backends\sqlite3\base.py", line 234, in execute
    return Database.Cursor.execute(self, query, params)
IntegrityError: column name is not unique