Hopper: java.lang.NullPointerException: Ticking memory connection

This is an automatically generated report based from the following crash: http://hopper.minecraft.net/crashes/minecraft/MCX-398880/

Crash:

java.lang.NullPointerException: Ticking memory connection
	at aew.a(SourceFile:55)
	at xe.a(SourceFile:292)
	at zd.a(SourceFile:58)
	at yb.a(SourceFile:238)
	at mv.a(SourceFile:615)
	at ik.a(SourceFile:32)
	at ik.a(SourceFile:10)
	at el.a(SourceFile:145)

The following is the first clean report made public about this crash:

---- Minecraft Crash Report ----
// Would you like a cupcake?

Time: 18.10.13 20:16
Description: Ticking memory connection

java.lang.NullPointerException: Ticking memory connection
	at aew.a(SourceFile:55)
	at xe.a(SourceFile:292)
	at zd.a(SourceFile:58)
	at yb.a(SourceFile:238)
	at mv.a(SourceFile:615)
	at ik.a(SourceFile:32)
	at ik.a(SourceFile:10)
	at el.a(SourceFile:145)
	at mr.c(SourceFile:134)
	at net.minecraft.server.MinecraftServer.u(SourceFile:529)
	at net.minecraft.server.MinecraftServer.t(SourceFile:441)
	at bsb.t(SourceFile:117)
	at net.minecraft.server.MinecraftServer.run(SourceFile:358)
	at kx.run(SourceFile:617)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Stacktrace:
	at aew.a(SourceFile:55)
	at xe.a(SourceFile:292)
	at zd.a(SourceFile:58)
	at yb.a(SourceFile:238)
	at mv.a(SourceFile:615)
	at ik.a(SourceFile:32)
	at ik.a(SourceFile:10)
	at el.a(SourceFile:145)

-- Ticking connection --
Details:
	Connection: el@1d978db
Stacktrace:
	at mr.c(SourceFile:134)
	at net.minecraft.server.MinecraftServer.u(SourceFile:529)
	at net.minecraft.server.MinecraftServer.t(SourceFile:441)
	at bsb.t(SourceFile:117)
	at net.minecraft.server.MinecraftServer.run(SourceFile:358)
	at kx.run(SourceFile:617)

-- System Details --
Details:
	Minecraft Version: 13w42b
	Operating System: Windows 7 (x86) version 6.1
	Java Version: 1.7.0_45, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
	Memory: 107713368 bytes (102 MB) / 333086720 bytes (317 MB) up to 1037959168 bytes (989 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G
	AABB Pool Size: 1387 (77672 bytes; 0 MB) allocated, 421 (23576 bytes; 0 MB) used
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 93 (5208 bytes; 0 MB) allocated, 66 (3696 bytes; 0 MB) used
	Player Count: 1 / 8; [ml['shufflelp'/439, l='Steves Adventure', x=821,91, y=25,00, z=707,60]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.

You can see this full report at http://hopper.minecraft.net/crashes/minecraft/MCX-398880/19118415/