Exception parsing: java.lang.NullPointerException

report=Exception parsing: java.lang.NullPointerException

The RdfSource is
<?xml version="1.0"?>
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
         xmlns:sm="http://statemachine.tvblob.com/">
<sm:Program rdf:ID="assertion" sm:name="programma">
  <sm:State rdf:ID="State1" sm:label="State1">
    <sm:transition>
       <sm:event rdf:parseType="Resource">
          <sm:label>redbutton</sm:label>
          <sm:param>ciao</sm:param>
       </sm:event>
       <sm:javaImpl>System.out.println("Sei Puppo");</sm:javaImpl>
       <sm:target rdf:resource="#State2" />
    </sm:transition>
  </sm:State>
  <sm:State rdf:ID="State2" label="State2">
     <sm:transition>
       <sm:event rdf:resource="blueButton" />
       <sm:javaImpl>System.out.println("Sei Puppo");</sm:javaImpl>
       <sm:target rdf:resource="#State2" />
     </sm:transition>
  </sm:State>
  <sm:Event rdf:ID="blueButton">
  </sm:Event>
</sm:Program>
</rdf:RDF>

RDF=<?xml version="1.0">

Received on Wednesday, 8 November 2006 07:33:22 UTC