Error

java.lang.NullPointerException
at EntityPlane.J_(EntityPlane.java:835)
at xd.a(World.java:2182)
at xd.f(World.java:2153)
at xd.n(World.java:2039)
at net.minecraft.client.Minecraft.k(Minecraft.java:1861)
at net.minecraft.client.Minecraft.x(Minecraft.java:819)
at net.minecraft.client.Minecraft.run(Minecraft.java:747)
at java.lang.Thread.run(Unknown Source)
Stopping!

SoundSystem shutting down...
Author: Paul Lamb, www.paulscode.com