Minecraft Forums

Okay, before I begin- I'm not 100% Sure where this should go honestly. But here we go:

I used World Painter, which allows you to make your own worlds and export them to minecraft. Never had a problem with it, it worked last night. Today however, I made a map and I was stuck on the "Building Terrain" screen for a few minutes. No crashes came, so I opened my Task Manager and HAD to close it that way. (It wouldn't even close with ALT+F4)

Crash report is as follows (I had to open up my Crash-Reports folder)...
And, this may not even be the crash report- as it says something about a server. This is the closest time that I had, and I was only opening my singleplayer world when this happened...

Also, I was running OptiFine- tried it without Optifine and it still didn't work, so that's not the problem. I can open up ANY other world, no problem. Can someone tell me what the problem is with this?

---- Minecraft Crash Report ----
// Would you like a cupcake?

Time: 2/2/14 5:00 PM
Description: Exception in server tick loop

java.lang.IllegalArgumentException: n must be positive

---- Minecraft Crash Report ----
// Would you like a cupcake?

Time: 2/2/14 5:00 PM
Description: Exception in server tick loop

java.lang.IllegalArgumentException: n must be positive
at java.util.Random.nextInt(Unknown Source)
at agm.a(SourceFile:122)
at agm.a(SourceFile:27)
at agg.a(SourceFile:362)
at ahb.a(SourceFile:74)
at apl.a(SourceFile:432)
at mi.a(SourceFile:160)
at aoj.a(SourceFile:781)
at mi.c(SourceFile:95)
at net.minecraft.server.MinecraftServer.g(SourceFile:242)
at bsk.a(IntegratedServer.java:129)
at bsk.e(IntegratedServer.java:152)
at net.minecraft.server.MinecraftServer.run(SourceFile:328)
at ky.run(SourceFile:617)


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

-- System Details --
Details:
Minecraft Version: 1.7.2
Operating System: Windows Vista (x86) version 6.0
Java Version: 1.7.0_51, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
Memory: 39576960 bytes (37 MB) / 78360576 bytes (74 MB) up to 518979584 bytes (494 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 103
Profiler Position: N/A (disabled)
Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Player Count: 0 / 8; []
Type: Integrated Server (map_client.txt)
Is Modded: Very likely; Jar signature invalidated

Try to remove the mod and install it again and restart your computer/laptop.ADDED: It could also be a folder was deleted in the world folder.

This happens to me too, but on skyblock. I can play just fine at first, but when I go to the main land, I get a crash like this. It loads just fine in 1.6.4, so it's something with 1.7.

Try loading your world in 1.6.4 and see if it works, but I don't know what to do to fix it completely.

Thank's you guys