12.05 01:00:47 [Server] WARNING [Minecraft.WorldEdit] WorldEdit: Failed to do NMS safe block set 12.05 01:00:47 [Server] INFO java.lang.NullPointerException 12.05 01:00:47 [Server] WARNING [Minecraft.WorldEdit] WorldEdit: Failed to do NMS access for direct NBT data copy 12.05 01:00:47 [Server] INFO java.lang.NullPointerException WorldEdit:^^^^^ Java: 12.05 01:11:51 [Server] INFO at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:497) 12.05 01:11:51 [Server] INFO at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:599) 12.05 01:11:51 [Server] INFO at ho.r(DedicatedServer.java:270) 12.05 01:11:51 [Server] INFO at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:703) 12.05 01:11:51 [Server] INFO at ht.b(SourceFile:29) 12.05 01:11:51 [Server] INFO at hu.a(ServerListenThread.java:56) 12.05 01:11:51 [Server] INFO at it.c(NetLoginHandler.java:75) 12.05 01:11:51 [Server] INFO at it.d(NetLoginHandler.java:182) 12.05 01:11:51 [Server] INFO at cpw.mods.fml.common.network.FMLNetworkHandler.onConnectionReceivedFromClient(FMLNetworkHandler.java:107) 12.05 01:11:51 [Server] INFO at cpw.mods.fml.common.network.FMLNetworkHandler.handleClientConnection(FMLNetworkHandler.java:153) 12.05 01:11:51 [Server] INFO at it.completeConnection(NetLoginHandler.java:198) 12.05 01:11:51 [Server] INFO at gm.a(ServerConfigurationManager.java:143) 12.05 01:11:51 [Server] INFO at cpw.mods.fml.common.network.FMLNetworkHandler.handlePlayerLogin(FMLNetworkHandler.java:282) 12.05 01:11:51 [Server] INFO at cpw.mods.fml.common.registry.GameRegistry.onPlayerLogin(GameRegistry.java:342) 12.05 01:11:51 [Server] INFO at keepcalm.mods.bukkit.forgeHandler.PlayerTracker.onPlayerLogin(PlayerTracker.java:49) 12.05 01:11:51 [Server] INFO at keepcalm.mods.bukkit.forgeHandler.PlayerTracker$1.run(PlayerTracker.java:45) 12.05 01:11:51 [Server] INFO at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:464) 12.05 01:11:51 [Server] INFO at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:482) 12.05 01:11:51 [Server] INFO at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:66) 12.05 01:11:51 [Server] INFO at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:391) 12.05 01:11:51 [Server] INFO at java.lang.reflect.Method.invoke(Method.java:601) 12.05 01:11:51 [Server] INFO at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 12.05 01:11:51 [Server] INFO at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) 12.05 01:11:51 [Server] INFO at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 12.05 01:11:51 [Server] INFO at me.storminmormon30.votecheck.main.onPlayerJoin(main.java:131) 12.05 01:11:51 [Server] INFO java.lang.NullPointerException What do those mean and what can I do to fix them?