Fixed Wireless Transmitter crashing when it is transmitting to a removed dimension, fixes #285

CHANGELOG.md

@@ -6,6 +6,7 @@
 - Fixed Grid Filter only updating the Grid when reopening the GUI
 - Fixed Wireless Grid not working cross dimensionally
 - Fixed Grid not displaying items after changing redstone mode
+- Fixed Wireless Transmitter crashing when it is transmitting to a removed dimension
 - Priority field and detector amount field can now display 4 digits at a time
 
 **Features**

src/main/java/refinedstorage/apiimpl/network/NetworkNodeGraph.java

@@ -73,10 +73,13 @@ public class NetworkNodeGraph implements INetworkNodeGraph {
 
                 if (transmitter.canTransmit()) {
                     if (!transmitter.isSameDimension()) {
+                        final World dimensionWorld = DimensionManager.getWorld(transmitter.getReceiverDimension());
+
+                        if (dimensionWorld != null) {
                             NetworkNodeGraph dimensionGraph = new NetworkNodeGraph(controller) {
                                 @Override
                                 public World getWorld() {
-                                return DimensionManager.getWorld(transmitter.getReceiverDimension());
+                                    return dimensionWorld;
                                 }
                             };
 
@@ -84,6 +87,7 @@ public class NetworkNodeGraph implements INetworkNodeGraph {
 
                             newNodes.addAll(dimensionGraph.all());
                             newNodeHashes.addAll(dimensionGraph.allHashes());
+                        }
                     } else {
                         BlockPos receiver = transmitter.getReceiver();