title: Geometry Doesn't exist in GEODJANGO
body: <p>I have installed all the dependies of Geodjango! Now i am following its tutorial <a href="https://docs.djangoproject.com/en/1.2/ref/contrib/gis/tutorial/" rel="nofollow">https://docs.djangoproject.com/en/1.2/ref/contrib/gis/tutorial/</a> -- Problem: command python manage.py syncdb generates error at <code>mpoly geometry(multipolygon 4326) not null that geometry does not exist</code></p>
  
  <pre><code>from django.contrib.gis.db import models
  
  class WorldBorders(models.Model):
      # Regular Django fields corresponding to the attributes in the
      # world borders shapefile.
      name = models.CharField(max_length=50)
      area = models.IntegerField()
      pop2005 = models.IntegerField('Population 2005')
      fips = models.CharField('FIPS Code', max_length=2)
      iso2 = models.CharField('2 Digit ISO', max_length=2)
      iso3 = models.CharField('3 Digit ISO', max_length=3)
      un = models.IntegerField('United Nations Code')
      region = models.IntegerField('Region Code')
      subregion = models.IntegerField('Sub-Region Code')
      lon = models.FloatField()
      lat = models.FloatField()
  
      # GeoDjango-specific: a geometry field (MultiPolygonField), and
      # overriding the default manager with a GeoManager instance.
      mpoly = models.MultiPolygonField() //ERROR HERE
  </code></pre>
  
  <p>How to solve this error?</p>
  
  <p><strong>UPDATE:</strong></p>
  
  <p><code>python manage.py sqlall world</code> generates following output:</p>
  
  <pre><code>BEGIN;
  CREATE TABLE "world_worldborders" (
      "id" serial NOT NULL PRIMARY KEY,
      "name" varchar(50) NOT NULL,
      "area" integer NOT NULL,
      "pop2005" integer NOT NULL,
      "fips" varchar(2) NOT NULL,
      "iso2" varchar(2) NOT NULL,
      "iso3" varchar(3) NOT NULL,
      "un" integer NOT NULL,
      "region" integer NOT NULL,
      "subregion" integer NOT NULL,
      "lon" double precision NOT NULL,
      "lat" double precision NOT NULL,
      "mpoly" geometry(MULTIPOLYGON,4326) NOT NULL
  )
  ;
  CREATE INDEX "world_worldborders_mpoly_id" ON "world_worldborders" USING GIST ( "mpoly" );
  
  COMMIT;
  </code></pre>
  
  <p>and <code>python manage.py syncdb</code> generates: <code>Program Error Geometry Doesn't exist</code> :</p>
  
  <p><code>root@cvp-linux:~/geodjango# python manage.py syncdb
  Syncing...
  Creating tables ...
  Creating table django_admin_log
  Creating table auth_permission
  Creating table auth_group_permissions
  Creating table auth_group
  Creating table auth_user_groups
  Creating table auth_user_user_permissions
  Creating table auth_user
  Creating table django_content_type
  Creating table django_session
  Creating table world_worldborders
  Traceback (most recent call last):
    File "manage.py", line 10, in &lt;module&gt;
      execute_from_command_line(sys.argv)
    File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 399, in execute_from_command_line
      utility.execute()
    File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 392, in execute
      self.fetch_command(subcommand).run_from_argv(self.argv)
    File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 242, in run_from_argv
      self.execute(*args, **options.__dict__)
    File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 285, in execute
      output = self.handle(*args, **options)
    File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 415, in handle
      return self.handle_noargs(**options)
    File "/usr/local/lib/python2.7/dist-packages/south/management/commands/syncdb.py", line 92, in handle_noargs
      syncdb.Command().execute(**options)
    File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 285, in execute
      output = self.handle(*args, **options)
    File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 415, in handle
      return self.handle_noargs(**options)
    File "/usr/local/lib/python2.7/dist-packages/django/core/management/commands/syncdb.py", line 107, in handle_noargs
      cursor.execute(statement)
    File "/usr/local/lib/python2.7/dist-packages/django/db/backends/util.py", line 69, in execute
      return super(CursorDebugWrapper, self).execute(sql, params)
    File "/usr/local/lib/python2.7/dist-packages/django/db/backends/util.py", line 53, in execute
      return self.cursor.execute(sql, params)
    File "/usr/local/lib/python2.7/dist-packages/django/db/utils.py", line 99, in __exit__
      six.reraise(dj_exc_type, dj_exc_value, traceback)
    File "/usr/local/lib/python2.7/dist-packages/django/db/backends/util.py", line 51, in execute
      return self.cursor.execute(sql)
  django.db.utils.ProgrammingError: type "geometry" does not exist
  LINE 14:     "mpoly" geometry(MULTIPOLYGON,4326) NOT NULL
  </code></p>