diff --git a/artdaq/Application/DataLoggerCore.cc b/artdaq/Application/DataLoggerCore.cc
index 7d5756ed..91653bd1 100644
--- a/artdaq/Application/DataLoggerCore.cc
+++ b/artdaq/Application/DataLoggerCore.cc
@@ -53,6 +53,12 @@ bool artdaq::DataLoggerCore::initialize(fhicl::ParameterSet const& pset)
 		TLOG(50) << "In any case, if you are using multiple art analyzers, make sure to set \"shared_memory_ordering\" to false in the DataLogger configuration to avoid issues with events not being received by the art analyzers.";
 	}
 
+	if (!agg_pset.has_key("init_fragment_count"))
+	{
+		TLOG(TLVL_ERROR) << "ERROR: init_fragment_count must be set for the DataLogger to function properly. Please set `init_fragment_count: 0` in the DataLogger configuration. (Will be book-kept by DAQInterface)";
+		return false;
+	}
+
 	// initialize the MetricManager and the names of our metrics
 	fhicl::ParameterSet metric_pset = daq_pset.get<fhicl::ParameterSet>("metrics", fhicl::ParameterSet());
 
diff --git a/artdaq/Application/DispatcherCore.cc b/artdaq/Application/DispatcherCore.cc
index 56b6a478..6cc0d5ae 100644
--- a/artdaq/Application/DispatcherCore.cc
+++ b/artdaq/Application/DispatcherCore.cc
@@ -65,6 +65,11 @@ bool artdaq::DispatcherCore::initialize(fhicl::ParameterSet const& pset)
 		return false;
 	}
 
+	if (!agg_pset.has_key("init_fragment_count"))
+	{
+		TLOG(TLVL_ERROR) << "ERROR: init_fragment_count must be set for the Dispatcher to function properly. Please set `init_fragment_count: 0` in the Dispatcher configuration. (Will be book-kept by DAQInterface)";
+		return false;
+	}
 	broadcast_mode_ = agg_pset.get<bool>("broadcast_mode", true);
 	allow_label_overwrites_ = agg_pset.get<bool>("allow_label_overwrites", true);
 	if (broadcast_mode_ && !agg_pset.has_key("broadcast_mode"))
diff --git a/artdaq/ArtModules/ArtdaqSharedMemoryService_service.cc b/artdaq/ArtModules/ArtdaqSharedMemoryService_service.cc
index c1d5106b..3df30c69 100644
--- a/artdaq/ArtModules/ArtdaqSharedMemoryService_service.cc
+++ b/artdaq/ArtModules/ArtdaqSharedMemoryService_service.cc
@@ -93,6 +93,7 @@ class ArtdaqSharedMemoryService : public ArtdaqSharedMemoryServiceInterface
 private:
 	std::unique_ptr<artdaq::SharedMemoryEventReceiver> incoming_events_;
 	std::list<std::shared_ptr<ArtdaqEvent>> event_ordering_;
+	std::set<artdaq::Fragment::sequence_id_t> released_broadcast_sequence_ids_;
 	size_t read_timeout_;
 	size_t subrun_closure_threshold_{1};
 	double safety_valve_timeout_s_{10.0};
@@ -309,9 +310,19 @@ std::shared_ptr<ArtdaqEvent> ArtdaqSharedMemoryService::ReceiveEvent(bool broadc
 				{
 					// First Fragment is broadcast (begin/end run/subrun), but there's more in event ordering!
 					TLOG(TLVL_RECEIVEEVENT) << "Returning Broadcast Fragment due to subrun closure";
-					output_event = event_ordering_.front();
+
+					if (released_broadcast_sequence_ids_.count(event_ordering_.front()->header->sequence_id) == 0)
+					{
+						output_event = event_ordering_.front();
+						released_broadcast_sequence_ids_.insert(event_ordering_.front()->header->sequence_id);
+						while (released_broadcast_sequence_ids_.size() > 1000) { released_broadcast_sequence_ids_.erase(released_broadcast_sequence_ids_.begin()); }
+					}
+					else
+					{
+						TLOG(TLVL_WARNING) << "Discarding duplicate Broadcast with sequence ID " << event_ordering_.front()->header->sequence_id << " and count " << event_ordering_.front()->fragments.size();
+					}
 					event_ordering_.pop_front();
-					break;  // while(output_event == nullptr)
+					continue;  // while(output_event == nullptr)
 				}
 			}
 			else if (current_subrun_ != 0 && first_sr > current_subrun_ + 1)
diff --git a/artdaq/DAQrate/SharedMemoryEventManager.cc b/artdaq/DAQrate/SharedMemoryEventManager.cc
index 43ce4095..7962ee95 100644
--- a/artdaq/DAQrate/SharedMemoryEventManager.cc
+++ b/artdaq/DAQrate/SharedMemoryEventManager.cc
@@ -1802,7 +1802,7 @@ void artdaq::SharedMemoryEventManager::send_init_frags_()
 	}
 	else if (init_fragment_count_ > 0 && init_fragment_map_size_() == 0)
 	{
-		TLOG(TLVL_WARNING) << "Cannot send Init Fragment(s) because I haven't yet received them! Set send_init_fragments to false or init_fragment_count to 0 if this process does not receive serialized art events to avoid potentially lengthy timeouts!";
+		TLOG(TLVL_INFO) << "Cannot send Init Fragment(s) because I haven't yet received any! Set send_init_fragments to false or init_fragment_count to 0 if this process does not receive serialized art events to avoid potentially lengthy timeouts!";
 	}
 	else if (init_fragment_count_ > 0)
 	{