java.lang.NoSuchMethodError: vx.getChunkManager(Lxd;)Lrs;
	at alb.a(WorldProvider.java:63)
	at alb.a(WorldProvider.java:40)
	at xd.<init>(World.java:344)
	at xd.<init>(World.java:277)
	at net.minecraft.client.Minecraft.a(Minecraft.java:1935)
	at mw.c(SourceFile:171)
	at iz.a(SourceFile:220)
	at if.a(SourceFile:150)
	at mw.a(SourceFile:192)
	at lr.b(EntityRenderer.java:972)
	at net.minecraft.client.Minecraft.x(Minecraft.java:871)
	at net.minecraft.client.Minecraft.run(Minecraft.java:748)
	at java.lang.Thread.run(Unknown Source)