Hopper: dk: Error while parsing: TranslatableComponent{key='multiplayer.player.left', args=[ii_milk], siblings=[], style=Style{hasParent=false, color=§e, bold

dk: Error while parsing: TranslatableComponent{key='multiplayer.player.left', args=[ii_milk], siblings=[], style=Style{hasParent=false, color=§e, bold=null, italic=null, underlined=null, obfuscated=null}}
	at dj.e(SourceFile:79)
	at dj.c(SourceFile:125)
	at net.minecraft.server.MinecraftServer.a(SourceFile:736)
	at hw.a(SourceFile:747)
	at hw.a(SourceFile:752)
	at kl.a(SourceFile:404)
	at cv.b(SourceFile:72)
	at kl.e(SourceFile:63)

---- Minecraft Crash Report ----
// I feel sad now :(

Time: 06/09/13 04:09 م
Description: Ticking memory connection

dk: Error while parsing: TranslatableComponent{key='multiplayer.player.left', args=[ii_milk], siblings=[], style=Style{hasParent=false, color=§e, bold=null, italic=null, underlined=null, obfuscated=null}}
	at dj.e(SourceFile:79)
	at dj.c(SourceFile:125)
	at net.minecraft.server.MinecraftServer.a(SourceFile:736)
	at hw.a(SourceFile:747)
	at hw.a(SourceFile:752)
	at kl.a(SourceFile:404)
	at cv.b(SourceFile:72)
	at kl.e(SourceFile:63)
	at ko.b(SourceFile:37)
	at bnq.b(SourceFile:84)
	at net.minecraft.server.MinecraftServer.t(SourceFile:481)
	at net.minecraft.server.MinecraftServer.s(SourceFile:398)
	at bnn.s(SourceFile:124)
	at net.minecraft.server.MinecraftServer.run(SourceFile:332)
	at hr.run(SourceFile:575)
Caused by: java.util.FormatFlagsConversionMismatchException: Conversion = s, Flags =  
	at java.util.Formatter$FormatSpecifier.failMismatch(Unknown Source)
	at java.util.Formatter$FormatSpecifier.checkBadFlags(Unknown Source)
	at java.util.Formatter$FormatSpecifier.checkGeneral(Unknown Source)
	at java.util.Formatter$FormatSpecifier.<init>(Unknown Source)
	at java.util.Formatter.parse(Unknown Source)
	at java.util.Formatter.format(Unknown Source)
	at java.util.Formatter.format(Unknown Source)
	at java.lang.String.format(Unknown Source)
	at dj.e(SourceFile:76)
	... 14 more


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

-- Head --
Stacktrace:
	at dj.e(SourceFile:79)
	at dj.c(SourceFile:125)
	at net.minecraft.server.MinecraftServer.a(SourceFile:736)
	at hw.a(SourceFile:747)
	at hw.a(SourceFile:752)
	at kl.a(SourceFile:404)
	at cv.b(SourceFile:72)
	at kl.e(SourceFile:63)

-- Ticking connection --
Details:
	Connection: kl@7086f9
Stacktrace:
	at ko.b(SourceFile:37)
	at bnq.b(SourceFile:84)
	at net.minecraft.server.MinecraftServer.t(SourceFile:481)
	at net.minecraft.server.MinecraftServer.s(SourceFile:398)
	at bnn.s(SourceFile:124)
	at net.minecraft.server.MinecraftServer.run(SourceFile:332)
	at hr.run(SourceFile:575)

-- System Details --
Details:
	Minecraft Version: 13w36b
	Operating System: Windows 8 (x86) version 6.2
	Java Version: 1.7.0_25, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
	Memory: 177104648 bytes (168 MB) / 518979584 bytes (494 MB) up to 518979584 bytes (494 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
	AABB Pool Size: 2693 (150808 bytes; 0 MB) allocated, 1827 (102312 bytes; 0 MB) used
	IntCache: cache: 1, tcache: 1, allocated: 12, tallocated: 94
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 2205 (123480 bytes; 0 MB) allocated, 831 (46536 bytes; 0 MB) used
	Player Count: 1 / 8; [kg['ii_milk'/818, l='13w36b', x=-48.28, y=99.06, z=18.13]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.