title: Magento api: Invalid webservice adapter specified
body: <p>Is there anything specific i need to do to get the api in magento working?</p>
  
  <p>I am visiting /api/soap/?wsdl on my local installation (1.7) and it returns the following error:</p>
  
  <pre><code>Invalid webservice adapter specified.
  </code></pre>
  
  <p>Everything looks enabled in the site but i cant find any info on other steps i need to do to get the api to work.</p>