diff --git a/src/data-managers/simulator-data-data-manager.js b/src/data-managers/simulator-data-data-manager.js
index 666ea5e..ef05abd 100644
--- a/src/data-managers/simulator-data-data-manager.js
+++ b/src/data-managers/simulator-data-data-manager.js
@@ -78,16 +78,21 @@ class SimulatorDataDataManager {
   onMessage(event, node) {
     var message = this.bufferToMessage(event.data);
 
-    AppDispatcher.dispatch({
-      type: 'simulatorData/data-changed',
-      data: message,
-      node: node
-    });
+    if (message !== null) {
+      AppDispatcher.dispatch({
+        type: 'simulatorData/data-changed',
+        data: message,
+        node: node
+      });
+    }
   }
 
   bufferToMessage(blob) {
     // parse incoming message into usable data
     var data = new DataView(blob);
+    if (data.byteLength === 0) {
+      return null;
+    }
 
     let OFFSET_TYPE = 2;
     let OFFSET_VERSION = 4;
diff --git a/src/stores/simulator-data-store.js b/src/stores/simulator-data-store.js
index 9033fd3..0826959 100644
--- a/src/stores/simulator-data-store.js
+++ b/src/stores/simulator-data-store.js
@@ -54,18 +54,16 @@ class SimulationDataStore extends ReduceStore {
         return state;
 
       case 'simulatorData/data-changed':
-      // get index for simulator id
-      if (state[action.node._id] == null) {
-        return state;
-      }
+        // get index for simulator id
+        if (state[action.node._id] == null) {
+          return state;
+        }
 
-      let index = action.node.simulators.findIndex(simulator => simulator.id === action.data.id);
-      if (index === -1 || state[action.node._id][index] == null) {
-        return state;
-      }
+        let index = action.node.simulators.findIndex(simulator => simulator.id === action.data.id);
+        if (index === -1 || state[action.node._id][index] == null) {
+          return state;
+        }
 
-      // only add data, if newer than current
-      if (state[action.node._id][index].sequence < action.data.sequence) {
         // add data to simulator
         for (i = 0; i < action.data.length; i++) {
           while (state[action.node._id][index].values.length < i + 1) {
@@ -87,9 +85,6 @@ class SimulationDataStore extends ReduceStore {
 
         // explicit call to prevent array copy
         this.__emitChange();
-      } else {
-        console.log('same sequence ' + state[action.node._id][index].sequence + ' ' + action.data.sequence);
-      }
 
         return state;