title: Strange QuickFix engine response to execution report message
body: <p>I am currently experiencing a strange problem with the open-source QuickFix engine. Our broker is sending some test trades with MsgType = 8 (Execution Report), and our QuickFix engine immediately replies with an exception saying "Unsupported Message Type". All of the tags in the broker's message appear to be legitimate.</p>
  
  <p>Why is this happening and how can I resolve the issue?</p>