Fixes

src/main/java/refinedstorage/api/network/INetworkNode.java

@@ -38,6 +38,11 @@ public interface INetworkNode {
      */
     void onDisconnected();
 
+    /**
+     * @return Whether the block is removed from the world
+     */
+    boolean isRemoved();
+
     /**
      * Called when the connection state of this node changes.
      * This is also called when redstone mode is updated, as opposed to {@link INetworkNode#onConnected(INetworkMaster)} and {@link INetworkNode#onDisconnected()}.

src/main/java/refinedstorage/block/BlockNode.java

@@ -11,7 +11,6 @@ import net.minecraft.util.EnumFacing;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.IBlockAccess;
 import net.minecraft.world.World;
-import refinedstorage.api.network.INetworkMaster;
 import refinedstorage.tile.TileNode;
 
 public abstract class BlockNode extends BlockBase {
@@ -59,16 +58,10 @@ public abstract class BlockNode extends BlockBase {
 
     @Override
     public void breakBlock(World world, BlockPos pos, IBlockState state) {
-        INetworkMaster network = null;
-
         if (!world.isRemote) {
-            network = ((TileNode) world.getTileEntity(pos)).getNetwork();
+            (((TileNode) world.getTileEntity(pos)).getNetwork()).rebuildNodes();
         }
 
         super.breakBlock(world, pos, state);
-
-        if (network != null) {
-            network.rebuildNodes();
-        }
     }
 }

src/main/java/refinedstorage/tile/TileDiskDrive.java

@@ -103,15 +103,19 @@ public class TileDiskDrive extends TileNode implements IStorageProvider, IStorag
     }
 
     @Override
-    public void onConnectionChange(INetworkMaster network, boolean state) {
+    public void onDisconnected() {
-        super.onConnectionChange(network, state);
+        super.onDisconnected();
 
-        // @TODO
         for (Storage storage : this.storages) {
             if (storage != null) {
                 storage.writeToNBT();
             }
         }
+    }
+
+    @Override
+    public void onConnectionChange(INetworkMaster network, boolean state) {
+        super.onConnectionChange(network, state);
 
         network.getStorage().rebuild();
     }

src/main/java/refinedstorage/tile/TileNode.java

@@ -6,6 +6,7 @@ import net.minecraft.util.math.BlockPos;
 import refinedstorage.RefinedStorageUtils;
 import refinedstorage.api.network.INetworkMaster;
 import refinedstorage.api.network.INetworkNode;
+import refinedstorage.block.BlockNode;
 import refinedstorage.tile.config.IRedstoneModeConfig;
 import refinedstorage.tile.config.RedstoneMode;
 
@@ -72,6 +73,11 @@ public abstract class TileNode extends TileBase implements INetworkNode, ISynchr
         this.network = null;
     }
 
+    @Override
+    public boolean isRemoved() {
+        return !(worldObj.getBlockState(pos).getBlock() instanceof BlockNode);
+    }
+
     @Override
     public void onConnectionChange(INetworkMaster network, boolean state) {
         // NO OP

src/main/java/refinedstorage/tile/TileStorage.java

@@ -77,6 +77,19 @@ public class TileStorage extends TileNode implements IStorageProvider, IStorageG
 
         if (storage == null && storageTag != null) {
             storage = new Storage();
+
+            if (network != null) {
+                network.getStorage().rebuild();
+            }
+        }
+    }
+
+    @Override
+    public void onDisconnected() {
+        super.onDisconnected();
+
+        if (storage != null) {
+            storage.writeToNBT();
         }
     }
 
@@ -84,11 +97,6 @@ public class TileStorage extends TileNode implements IStorageProvider, IStorageG
     public void onConnectionChange(INetworkMaster network, boolean state) {
         super.onConnectionChange(network, state);
 
-        // @TODO
-        if (storage != null) {
-            storage.writeToNBT();
-        }
-
         network.getStorage().rebuild();
     }
 

src/main/java/refinedstorage/tile/controller/TileController.java

@@ -404,6 +404,10 @@ public class TileController extends TileBase implements INetworkMaster, IEnergyR
 
             INetworkNode node = (INetworkNode) tile;
 
+            if (node.isRemoved()) {
+                continue;
+            }
+
             newNodes.add(node);
             newNodesPos.add(node.getPosition());