ftb crash landing crashes

2014-12-22 17:56:12 [INFO] [STDERR] net.minecraft.util.ReportedException: Exception in world tick
2014-12-22 17:56:12 [INFO] [STDERR] at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1946)
2014-12-22 17:56:12 [INFO] [STDERR] at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:910)
2014-12-22 17:56:12 [INFO] [STDERR] at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:838)
2014-12-22 17:56:12 [INFO] [STDERR] at net.minecraft.client.main.Main.main(SourceFile:101)
2014-12-22 17:56:12 [INFO] [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
2014-12-22 17:56:12 [INFO] [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
2014-12-22 17:56:12 [INFO] [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
2014-12-22 17:56:12 [INFO] [STDERR] at java.lang.reflect.Method.invoke(Unknown Source)
2014-12-22 17:56:12 [INFO] [STDERR] at net.minecraft.launchwrapper.Launch.launch(Launch.java:131)
2014-12-22 17:56:12 [INFO] [STDERR] at net.minecraft.launchwrapper.Launch.main(Launch.java:27)
2014-12-22 17:56:12 [INFO] [STDERR] Caused by: java.lang.NullPointerException
2014-12-22 17:56:12 [INFO] [STDERR] at cpw.mods.fml.common.network.EntitySpawnPacket.execute(EntitySpawnPacket.java:184)
2014-12-22 17:56:12 [INFO] [STDERR] at cpw.mods.fml.common.network.FMLNetworkHandler.handleFMLPacket(FMLNetworkHandler.java:116)
2014-12-22 17:56:12 [INFO] [STDERR] at cpw.mods.fml.common.network.FMLNetworkHandler.handlePacket250Packet(FMLNetworkHandler.java:81)
2014-12-22 17:56:12 [INFO] [STDERR] at net.minecraft.client.multiplayer.NetClientHandler.func_72501_a(NetClientHandler.java:1651)
2014-12-22 17:56:12 [INFO] [STDERR] at net.minecraft.network.packet.Packet250CustomPayload.func_73279_a(SourceFile:61)
2014-12-22 17:56:12 [INFO] [STDERR] at net.minecraft.network.TcpConnection.func_74428_b(TcpConnection.java:462)
2014-12-22 17:56:12 [INFO] [STDERR] at net.minecraft.client.multiplayer.NetClientHandler.func_72551_d(NetClientHandler.java:281)
2014-12-22 17:56:12 [INFO] [STDERR] at net.minecraft.client.multiplayer.WorldClient.func_72835_b(WorldClient.java:99)
2014-12-22 17:56:12 [INFO] [STDERR] at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1930)
2014-12-22 17:56:12 [INFO] [STDERR] ... 9 more