title: PostGIS Error: type "geography" does not exist
body: <p>I just upgraded my development machine to Windows 7 and am therefore reinstalling PostgreSQL and PostGIS.  I used the <a href="http://www.enterprisedb.com/products-services-training/postgres-plus/download" rel="noreferrer">Postgres Plus installer</a>, as recommended on the Postgres website, and followed <a href="http://get.enterprisedb.com/docs/Tutorial_All_PPSS_PostGIS.pdf" rel="noreferrer">this tutorial</a> for installation.  I created a database using the template_postgis and the application that I am currently developing was able to connect to the database with no problems.</p>
  
  <p>However, my old code is not able to create tables using the PostGIS <code>Geography</code> like it used to.  For example, when I try to create the following table:</p>
  
  <pre><code>CREATE TABLE test_area (
      id SERIAL PRIMARY KEY,
      name VARCHAR(1000),
      area GEOGRAPHY(POLYGON, 4326),
      start_time DATE,
      end_time DATE
  )
  </code></pre>
  
  <p>I get the following error:</p>
  
  <pre><code>ERROR:  type "geography" does not exist
  LINE 4:         area GEOGRAPHY(POLYGON, 4326),
                       ^
  </code></pre>
  
  <p>If I look under the database in the Object brower of pgAdmin III, I see a bunch of <code>Geometry</code> functions, so the installation seems to have run correctly.  I'm not sure what my problem might be.  Is it possible for the installer to only install PostGIS <code>Geometry</code>, but not <code>Geography</code>?</p>