Django migrate model with user in a foreignkey fails (ValueError: Related model u'auth.User' cannot been resolved)

Im trying to migrate my django model:

from django.contrib.auth.models import User

class Post(models.Model):

    headline = models.CharField(max_length=200)

    slug = models.SlugField(max_length=200)

    body = models.TextField(blank=True, null=True)

    author = models.ForeignKey(User, null=True, blank=True)

I added the author field after I created the model.

Here is the migration django creates:

# encoding: utf8

from django.db import models, migrations

class Migration(migrations.Migration):

    dependencies = [('articles', '0002_auto')]

    operations = [

        migrations.AddField(

            field = models.ForeignKey(to_field=u'id', to=u'auth.User', blank=True, null=True),

            name = 'author',

            model_name = 'post',

        ),

    ]

Here is my traceback when I try to run ./manage.py migrate:

Operations to perform:

  Synchronize unmigrated apps: ckeditor, sessions, admin, messages, auth, staticfiles, contenttypes, django_extensions

  Apply all migrations: articles

Synchronizing apps without migrations:

  Creating tables...

  Installing custom SQL...

  Installing indexes...

Installed 0 object(s) from 0 fixture(s)

Running migrations:

  Applying articles.0002_post_author...Traceback (most recent call last):

  File "./manage.py", line 10, in <module>

    execute_from_command_line(sys.argv)

  File "/home/USER/.virtualenvs/PROJECT/src/django-trunk/django/core/management/__init__.py", line 397, in execute_from_command_line

    utility.execute()

  File "/home/USER/.virtualenvs/PROJECT/src/django-trunk/django/core/management/__init__.py", line 390, in execute

    self.fetch_command(subcommand).run_from_argv(self.argv)

  File "/home/USER/.virtualenvs/PROJECT/src/django-trunk/django/core/management/base.py", line 242, in run_from_argv

    self.execute(*args, **options.__dict__)

  File "/home/USER/.virtualenvs/PROJECT/src/django-trunk/django/core/management/base.py", line 289, in execute

    output = self.handle(*args, **options)

  File "/home/USER/.virtualenvs/PROJECT/src/django-trunk/django/core/management/commands/migrate.py", line 116, in handle

    executor.migrate(targets, plan, fake=options.get("fake", False))

  File "/home/USER/.virtualenvs/PROJECT/src/django-trunk/django/db/migrations/executor.py", line 60, in migrate

    self.apply_migration(migration, fake=fake)

  File "/home/USER/.virtualenvs/PROJECT/src/django-trunk/django/db/migrations/executor.py", line 73, in apply_migration

    migration.apply(project_state, schema_editor)

  File "/home/USER/.virtualenvs/PROJECT/src/django-trunk/django/db/migrations/migration.py", line 80, in apply

    operation.database_forwards(self.app_label, schema_editor, project_state, new_state)

  File "/home/USER/.virtualenvs/PROJECT/src/django-trunk/django/db/migrations/operations/fields.py", line 22, in database_forwards

    schema_editor.add_field(from_model, to_model._meta.get_field_by_name(self.name)[0])

  File "/home/USER/.virtualenvs/PROJECT/src/django-trunk/django/db/backends/schema.py", line 349, in add_field

    definition, params = self.column_sql(model, field, include_default=True)

  File "/home/USER/.virtualenvs/PROJECT/src/django-trunk/django/db/backends/schema.py", line 105, in column_sql

    db_params = field.db_parameters(connection=self.connection)

  File "/home/USER/.virtualenvs/PROJECT/src/django-trunk/django/db/models/fields/related.py", line 1285, in db_parameters

    return {"type": self.db_type(connection), "check": []}

  File "/home/USER/.virtualenvs/PROJECT/src/django-trunk/django/db/models/fields/related.py", line 1276, in db_type

    rel_field = self.related_field

  File "/home/USER/.virtualenvs/PROJECT/src/django-trunk/django/db/models/fields/related.py", line 1183, in related_field

    return self.foreign_related_fields[0]

  File "/home/USER/.virtualenvs/PROJECT/src/django-trunk/django/db/models/fields/related.py", line 971, in foreign_related_fields

    return tuple(rhs_field for lhs_field, rhs_field in self.related_fields)

  File "/home/USER/.virtualenvs/PROJECT/src/django-trunk/django/db/models/fields/related.py", line 958, in related_fields

    self._related_fields = self.resolve_related_fields()

  File "/home/USER/.virtualenvs/PROJECT/src/django-trunk/django/db/models/fields/related.py", line 943, in resolve_related_fields

    raise ValueError('Related model %r cannot been resolved' % self.rel.to)

ValueError: Related model u'auth.User' cannot been resolved

Anyone know what I'm doing wrong? Or is this a bug? (Using 1.7.dev20130903182221)

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