[Crash] B45 Exception in server tick loop

[ghost]

java.lang.NullPointerException: Exception in server tick loop
at net.minecraft.world.gen.ChunkProviderServer.func_73241_b(ChunkProviderServer.java:127)
at net.minecraft.world.WorldServer.func_73044_a(WorldServer.java:1102)
at net.minecraft.server.MinecraftServer.func_71267_a(MinecraftServer.java:532)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:856)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:683)
at java.lang.Thread.run(Thread.java:745)

[Bogdan-G]

full crash-log pls

[ghost]

http://pastebin.com/fUWrMhUR