title: Why is the Spring/Flex/BlazeDS Messaging service-adapter not called?
body: <p>I have attached a service-adapter to a spring message-destination as follows:</p>
  
  <pre><code>&lt;flex:message-destination 
      id="secured-chat" 
      send-security-constraint="trusted" 
      subtopic-separator="." 
      service-adapter="secured-chatAdapter" 
      allow-subtopics="true" /&gt;
  </code></pre>
  
  <p>The init methods are called during the bean's initialization, and I get "invoke" messages when new messages are sent.</p>
  
  <p>However, allowSubcribe and other methods are never called.  Are there any common causes of this problem?</p>