Fixed Dormant Chunk Cache.

core/Registration.java

@@ -490,6 +490,7 @@ public class Registration
 			ph.registerNewLayer( "appeng.api.parts.layers.LayerIEnergyHandler", "cofh.api.energy.IEnergyHandler" );
 
 		FMLCommonHandler.instance().bus().register( TickHandler.instance );
+		MinecraftForge.EVENT_BUS.register( TickHandler.instance );
 		MinecraftForge.EVENT_BUS.register( new PartPlacement() );
 
 		IGridCacheRegistry gcr = AEApi.instance().registries().gridCache();

hooks/TickHandler.java

@@ -5,6 +5,7 @@ import java.util.LinkedList;
 import java.util.Queue;
 import java.util.concurrent.Callable;
 
+import net.minecraftforge.event.world.ChunkEvent;
 import net.minecraftforge.event.world.WorldEvent;
 import appeng.api.networking.IGridNode;
 import appeng.core.AELog;
@@ -103,10 +104,23 @@ public class TickHandler
 		}
 	}
 
+	@SubscribeEvent
+	public void onChunkLoad(ChunkEvent.Load load)
+	{
+		for (Object te : load.getChunk().chunkTileEntityMap.values())
+		{
+			if ( te instanceof AEBaseTile )
+			{
+				((AEBaseTile) te).onChunkLoad();
+			}
+		}
+	}
+
 	@SubscribeEvent
 	public void onTick(TickEvent ev)
 	{
-		if ( ev.type == Type.SERVER && ev.phase == Phase.END ) // for no there is no reason to care about this on the client...
+		if ( ev.type == Type.SERVER && ev.phase == Phase.END ) // for no there is no reason to care about this on the
+																// client...
 		{
 			HandlerRep repo = getRepo();
 			while (!repo.tiles.isEmpty())

tile/AEBaseTile.java

@@ -111,6 +111,22 @@ public class AEBaseTile extends TileEntity implements IOrientable, ICommonTile,
 			h.Tick();
 	}
 
+	@Override
+	public void onChunkUnload()
+	{
+		if ( !isInvalid() )
+			invalidate();
+	}
+
+	/**
+	 * for dormant chunk cache.
+	 */
+	public void onChunkLoad()
+	{
+		if ( isInvalid() )
+			validate();
+	}
+
 	@Override
 	// NOTE: WAS FINAL, changed for Immibis
 	public void writeToNBT(NBTTagCompound data)