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I have been having problems lately with this map and I am not sure why, I was wondering if anyone could help me figure it out, the crash report reads as follows




---- Minecraft Crash Report ----
// I blame Dinnerbone.

Time: 6/22/14 7:02 PM
Description: Exception ticking world

java.lang.IllegalArgumentException: n must be positive
at java.util.Random.nextInt(Unknown Source)
at amv.a(SourceFile:72)
at azn.a(SourceFile:460)
at om.a(SourceFile:175)
at ayg.a(SourceFile:851)
at om.c(SourceFile:104)
at om.d(SourceFile:117)
at alh.b(SourceFile:290)
at on.h(SourceFile:302)
at on.c(SourceFile:193)
at net.minecraft.server.MinecraftServer.w(SourceFile:554)
at net.minecraft.server.MinecraftServer.v(SourceFile:496)
at clk.v(SourceFile:132)
at net.minecraft.server.MinecraftServer.run(SourceFile:412)
at nd.run(SourceFile:682)


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 amv.a(SourceFile:72)
at azn.a(SourceFile:460)
at om.a(SourceFile:175)
at ayg.a(SourceFile:851)
at om.c(SourceFile:104)
at om.d(SourceFile:117)
at alh.b(SourceFile:290)
at on.h(SourceFile:302)
at on.c(SourceFile:193)

-- Affected level --
Details:
Level name: Super Hostile - Sunburn Islands
All players: 1 total; [oq['drbrice'/575, l='Super Hostile - Sunburn Islands', x=27.08, y=64.25, z=-448.20]]
Chunk stats: ServerChunkCache: 1750 Drop: 0
Level seed: 832172985
Level generator: ID 00 - default, ver 1. Features enabled: true
Level generator options:
Level spawn location: 54.00,67.00,72.00 - World: (54,67,72), Chunk: (at 6,4,8 in 3,4; contains blocks 48,0,64 to 63,255,79), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 1163785 game time, 157117 day time
Level dimension: 0
Level storage version: 0x04ABD - Anvil
Level weather: Rain time: 92355 (now: false), thunder time: 93353 (now: false)
Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Stacktrace:
at net.minecraft.server.MinecraftServer.w(SourceFile:554)
at net.minecraft.server.MinecraftServer.v(SourceFile:496)
at clk.v(SourceFile:132)
at net.minecraft.server.MinecraftServer.run(SourceFile:412)
at nd.run(SourceFile:682)

-- System Details --
Details:
Minecraft Version: 14w20b
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.7.0_51, Oracle Corporation
Java VM Version: Java HotSpot™ 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 223841192 bytes (213 MB) / 405798912 bytes (387 MB) up to 954728448 bytes (910 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G
IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
Profiler Position: N/A (disabled)
Player Count: 1 / 8; [oq['drbrice'/575, l='Super Hostile - Sunburn Islands', x=27.08, y=64.25, z=-448.20]]
Type: Integrated Server (map_client.txt)
Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.

I am not very good at reading crash reports but i would think that it has something to do with playing in the snapshot, set it to 1.7.2, it worked fine for me.

Thank you it worked!