Hopper: java.lang.IllegalArgumentException: n must be positive

This is an automatically generated report based from the following crash: http://hopper.minecraft.net/crashes/minecraft/MCX-3030/

Crash:

java.lang.IllegalArgumentException: n must be positive
	at java.util.Random.nextInt(Unknown Source)
	at ts.b(SourceFile:108)
	at oe.a(SourceFile:651)
	at oe.a(SourceFile:612)
	at tl.a(SourceFile:43)
	at ue.q(SourceFile:859)
	at jz.a(SourceFile:572)
	at eg.a(SourceFile:36)
	at cm.b(SourceFile:64)
	at jz.e(SourceFile:60)

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

---- Minecraft Crash Report ----
// This is a token for 1 free hug. Redeem at your nearest Mojangsta: [~~HUG~~]

Time: 8/15/13 9:55 PM
Description: Ticking memory connection

java.lang.IllegalArgumentException: n must be positive
	at java.util.Random.nextInt(Unknown Source)
	at ts.b(SourceFile:108)
	at oe.a(SourceFile:651)
	at oe.a(SourceFile:612)
	at tl.a(SourceFile:43)
	at ue.q(SourceFile:859)
	at jz.a(SourceFile:572)
	at eg.a(SourceFile:36)
	at cm.b(SourceFile:64)
	at jz.e(SourceFile:60)
	at kc.b(SourceFile:37)
	at bkz.b(SourceFile:84)
	at net.minecraft.server.MinecraftServer.t(SourceFile:488)
	at net.minecraft.server.MinecraftServer.s(SourceFile:405)
	at bkw.s(SourceFile:124)
	at net.minecraft.server.MinecraftServer.run(SourceFile:339)
	at hh.run(SourceFile:582)


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

-- Head --
Stacktrace:
	at java.util.Random.nextInt(Unknown Source)
	at ts.b(SourceFile:108)
	at oe.a(SourceFile:651)
	at oe.a(SourceFile:612)
	at tl.a(SourceFile:43)
	at ue.q(SourceFile:859)
	at jz.a(SourceFile:572)
	at eg.a(SourceFile:36)
	at cm.b(SourceFile:64)
	at jz.e(SourceFile:60)

-- Ticking connection --
Details:
	Connection: jz@10c9231
Stacktrace:
	at kc.b(SourceFile:37)
	at bkz.b(SourceFile:84)
	at net.minecraft.server.MinecraftServer.t(SourceFile:488)
	at net.minecraft.server.MinecraftServer.s(SourceFile:405)
	at bkw.s(SourceFile:124)
	at net.minecraft.server.MinecraftServer.run(SourceFile:339)
	at hh.run(SourceFile:582)

-- System Details --
Details:
	Minecraft Version: 1.6.2
	Operating System: Windows 7 (x86) version 6.1
	Java Version: 1.7.0_21, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
	Memory: 17207752 bytes (16 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: 989 (55384 bytes; 0 MB) allocated, 630 (35280 bytes; 0 MB) used
	Suspicious classes: No suspicious classes found.
	IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 1192 (66752 bytes; 0 MB) allocated, 340 (19040 bytes; 0 MB) used
	Player Count: 1 / 8; [ju['TrazT'/10441, l='§c§lFiery depths§o - §fA CTM map by colorfusion§0', x=-1315.11, y=114.00, z=-403.08]]
	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-3030/3234886/