Hi,

I think there is a little coquille there.

<extension target="org.nuxeo.ecm.core.lifecycle.LifeCycleService" point="types">
  <types>
    <type name="UserInvitationContainer">default></type>
    <type name="UserInvitation">registrationRequest</type>
  </types>

Look the UserInvitationContainer life cycle name :)