crash

[15:55:16] [Client thread/FATAL]: Unreported exception thrown!
java.lang.NullPointerException
[15:55:16] [Client thread/INFO] [STDOUT]: [net.minecraft.client.Minecraft:displayCrashReport:388]: ---- Minecraft Crash Report ----
// Daisy, daisy...

Time: 11/23/14 3:55 PM
Description: Unexpected error

java.lang.NullPointerException: Unexpected error


A detailed walkthrough of the error, its code path and all known details is as follows:
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-- Head --
Stacktrace:
	at net.minecraft.client.multiplayer.WorldClient.addWorldInfoToCrashReport(WorldClient.java:415)