Event.hbm.xml Problems?

When I created my first Event.hbm.xml I had two issues:

1) I placed the file in the wrong location.
2) I missed an element under hibernate-mapping

This was not my only issue, because after I rectified these issues, I was still facing the "Not Found" error.

The trick is: When you balls up the configuration, re-run "mvn compile" and have another shot at it.