NPE in Party/My Communications

If you create a new communication in the "Party" menu, "Communications" tab, which concerns the current user, it is shown in the "My communications" tab in the "ListPartyCommEvents" section. However, it throws an NPE with the following message:

java.lang.RuntimeException: Error rendering included form named [ListPartyCommEvents] at location [component://party/widget/partymgr/CommunicationEventForms.xml]: java.lang.NullPointerExceptionjava.lang.NullPointerException