---- Minecraft Crash Report ----
// My bad.

Time: 1/6/13 5:57 PM
Description: Ticking memory connection

java.lang.ClassCastException: aob cannot be cast to aoa
	at akl.a(SourceFile:111)
	at ir.a(SourceFile:240)
	at iv.a(SourceFile:367)
	at fk.a(SourceFile:58)
	at cf.b(SourceFile:55)
	at iv.d(SourceFile:57)
	at iw.b(SourceFile:39)
	at beq.b(SourceFile:84)
	at net.minecraft.server.MinecraftServer.r(SourceFile:762)
	at net.minecraft.server.MinecraftServer.q(SourceFile:679)
	at ben.q(SourceFile:117)
	at net.minecraft.server.MinecraftServer.run(SourceFile:613)
	at fy.run(SourceFile:849)


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

-- System Details --
Details:
	Minecraft Version: 13w01b
	Operating System: Windows 7 (x86) version 6.1
	Java Version: 1.7.0_10, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
	Memory: 265569624 bytes (253 MB) / 519110656 bytes (495 MB) up to 1037959168 bytes (989 MB)
	JVM Flags: 2 total; -Xms512m -Xmx1024m
	AABB Pool Size: 982 (54992 bytes; 0 MB) allocated, 825 (46200 bytes; 0 MB) used
	Suspicious classes: No suspicious classes found.
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 288 (16128 bytes; 0 MB) allocated, 263 (14728 bytes; 0 MB) used
	Player Count: 1 / 8; [iq['dtschaedler'/23, l='New World', x=-739.65, y=4.00, z=-752.57]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.