---- Minecraft Crash Report ----
// Don't be sad, have a hug! <3

Time: 1/10/14 9:51 PM
Description: Ticking player

java.lang.IllegalArgumentException: Modifier name cannot be empty
	at org.apache.commons.lang3.Validate.notEmpty(Validate.java:398)
	at sa.<init>(SourceFile:29)
	at xa.a(SourceFile:94)
	at abu.D(SourceFile:598)
	at rm.h(SourceFile:1200)
	at xq.h(SourceFile:240)
	at mp.i(SourceFile:205)
	at na.a(SourceFile:209)
	at iu.a(SourceFile:137)
	at iw.a(SourceFile:20)
	at ef.a(SourceFile:164)
	at mv.c(SourceFile:134)
	at net.minecraft.server.MinecraftServer.u(SourceFile:528)
	at net.minecraft.server.MinecraftServer.t(SourceFile:440)
	at btk.t(SourceFile:117)
	at net.minecraft.server.MinecraftServer.run(SourceFile:357)
	at lb.run(SourceFile:616)


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

-- Head --
Stacktrace:
	at org.apache.commons.lang3.Validate.notEmpty(Validate.java:398)
	at sa.<init>(SourceFile:29)
	at xa.a(SourceFile:94)
	at abu.D(SourceFile:598)
	at rm.h(SourceFile:1200)
	at xq.h(SourceFile:240)

-- Player being ticked --
Details:
	Entity Type: null (mp)
	Entity ID: 251
	Entity Name: Dharok_Dark8
	Entity's Exact location: 528.27, 70.00, -263.80
	Entity's Block location: World: (528,70,-264), Chunk: (at 0,4,8 in 33,-17; contains blocks 528,0,-272 to 543,255,-257), Region: (1,-1; contains chunks 32,-32 to 63,-1, blocks 512,0,-512 to 1023,255,-1)
	Entity's Momentum: 0.00, -0.08, 0.00
Stacktrace:
	at mp.i(SourceFile:205)
	at na.a(SourceFile:209)
	at iu.a(SourceFile:137)
	at iw.a(SourceFile:20)
	at ef.a(SourceFile:164)

-- Ticking connection --
Details:
	Connection: ef@1489c06
Stacktrace:
	at mv.c(SourceFile:134)
	at net.minecraft.server.MinecraftServer.u(SourceFile:528)
	at net.minecraft.server.MinecraftServer.t(SourceFile:440)
	at btk.t(SourceFile:117)
	at net.minecraft.server.MinecraftServer.run(SourceFile:357)
	at lb.run(SourceFile:616)

-- System Details --
Details:
	Minecraft Version: 1.7.4
	Operating System: Windows 7 (x86) version 6.1
	Java Version: 1.6.0_14, Sun Microsystems Inc.
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Sun Microsystems Inc.
	Memory: 47024048 bytes (44 MB) / 189710336 bytes (180 MB) up to 532742144 bytes (508 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
	AABB Pool Size: 2852 (159712 bytes; 0 MB) allocated, 2671 (149576 bytes; 0 MB) used
	IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 340 (19040 bytes; 0 MB) allocated, 317 (17752 bytes; 0 MB) used
	Player Count: 1 / 8; [mp['Dharok_Dark8'/251, l='New Primary', x=528.27, y=70.00, z=-263.80]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.