Fixed the dreaded GSOD crash. Fixes BUKKIT-1040

src/main/java/net/minecraft/server/ServerConfigurationManager.java

@@ -303,6 +303,8 @@ public class ServerConfigurationManager {
 
         // CraftBukkit start
         byte actualDimension = (byte) (worldserver.getWorld().getEnvironment().getId());
+        // Force the client to refresh their chunk cache.
+        entityplayer1.netServerHandler.sendPacket(new Packet9Respawn((byte) (actualDimension >= 0 ? -1 : 0), (byte) worldserver.difficulty, worldserver.getWorldData().getType(), worldserver.getHeight(), entityplayer.itemInWorldManager.getGameMode()));
         entityplayer1.netServerHandler.sendPacket(new Packet9Respawn(actualDimension, (byte) worldserver.difficulty, worldserver.getWorldData().getType(), worldserver.getHeight(), entityplayer.itemInWorldManager.getGameMode()));
         entityplayer1.spawnIn(worldserver);
         entityplayer1.dead = false;