[BH] Several classes/lectures don't work

List of tunings and what to change, this way it can't get more easy :

si_HobbyClass_StartClass_Fabrication

        <V t="create_situation">
            <U n="create_situation">
                <V n="create_situation" t="situation_start">
                    <U n="situation_start">
                        <V n="actor_init_job" t="specify_job">
                            <T n="specify_job">397235<!--job_HobbyClass_Instructor--></T>
                        </V>
                        <V n="linked_sim_participant" t="enabled" />
                        <T n="situation">398059<!--situation_HobbyClass_Instructor_Fabrication--></T>
                        <V n="situation_default_target" t="enabled" />
                    </U>
                </V>
                <V n="timing" t="at_end">
                    <U n="at_end">
                        <E n="criticality">NotCritical</E>
                    </U>
                </V>
            </U>
        </V>

broadcaster_HobbyClass_Whiteboard_LectureListeners_Fabrication

                <L n="affordances">
                    <U>
                        <T n="affordance">396384<!--sI_HobbyClass_ListenToLecture_Fabrication--></T>
                    </U>
                </L>

broadcaster_HobbyClass_Whiteboard_LectureListeners_ResearchDebate

                <L n="affordances">
                    <U>
                        <T n="affordance">396377<!--sI_HobbyClass_ListenToLecture_ResearchDebate--></T>
                    </U>
                </L>

broadcaster_HobbyClass_Whiteboard_LectureListeners_Robotics

                <L n="affordances">
                    <U>
                        <T n="affordance">396376<!--sI_HobbyClass_ListenToLecture_Robotics--></T>
                    </U>
                </L>