Django South error con migración inicial

Tengo un nuevo proyecto Django 1.3 y una aplicación que he creado. Agregué sur a misettings.py y aún no he ejecutadosyncdb. Cuando ejecuto los siguientes comandos según el tutorial y la documentación de South, recibí el error que se muestra a continuación.

¿Alguna idea sobre qué está causando el problema? @Actualizar No está instalando correctamente South (ver respuesta).Es compatible South 0.7.3 con Django 1.3? @Actualizar Sí.Comandos ejecutados y error del sur
$ python ./manage.py schemamigration qexpenses --initial
Creating migrations directory at '/Users/matthew/development/quest-projects/qexpense-tracker/quexptrkr/../quexptrkr/qexpenses/migrations'...
Creating __init__.py in '/Users/matthew/development/quest-projects/qexpense-tracker/quexptrkr/../quexptrkr/qexpenses/migrations'...
 + Added model qexpenses.Buyer
 + Added model qexpenses.Vendor
 + Added model qexpenses.Department
 + Added model qexpenses.Project
 + Added model qexpenses.PurchaseType
 + Added model qexpenses.PurchaseOrder
Created 0001_initial.py. You can now apply this migration with: ./manage.py migrate qexpenses
(qexpense-tracker)matthew@Matthew-Rankins-MacBook-Pro:~/development/quest-projects/qexpense-tracker/quexptrkr
$ python ./manage.py migrate
Traceback (most recent call last):
  File "./manage.py", line 14, in <module>
    execute_manager(settings)
  File "/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/django/core/management/__init__.py", line 438, in execute_manager
    utility.execute()
  File "/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/django/core/management/__init__.py", line 379, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/django/core/management/base.py", line 191, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/django/core/management/base.py", line 220, in execute
    output = self.handle(*args, **options)
  File "/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/south/management/commands/migrate.py", line 105, in handle
    ignore_ghosts = ignore_ghosts,
  File "/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/south/migration/__init__.py", line 171, in migrate_app
    applied = check_migration_histories(applied, delete_ghosts, ignore_ghosts)
  File "/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/south/migration/__init__.py", line 72, in check_migration_histories
    for h in histories:
  File "/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/django/db/models/query.py", line 107, in _result_iter
    self._fill_cache()
  File "/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/django/db/models/query.py", line 772, in _fill_cache
    self._result_cache.append(self._iter.next())
  File "/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/django/db/models/query.py", line 273, in iterator
    for row in compiler.results_iter():
  File "/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 680, in results_iter
    for rows in self.execute_sql(MULTI):
  File "/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 735, in execute_sql
    cursor.execute(sql, params)
  File "/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/django/db/backends/util.py", line 34, in execute
    return self.cursor.execute(sql, params)
  File "/Users/matthew/.virtualenvs/qexpense-tracker/lib/python2.7/site-packages/django/db/backends/sqlite3/base.py", line 234, in execute
    return Database.Cursor.execute(self, query, params)
django.db.utils.DatabaseError: no such table: south_migrationhistory
(qexpense-tracker)matthew@Matthew-Rankins-MacBook-Pro:~/development/quest-projects/qexpense-tracker/quexptrkr
$ 
Configuració

Estoy ejecutando OS X 10.6.7. A continuación se muestra la salida depip 1.0 required.txt para mi virtualenv:

$ cat requirements.txt 
Django==1.3
South==0.7.3
distribute==0.6.15
virtualenv==1.6
virtualenvwrapper==2.6.3
wsgiref==0.1.2

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