Minecraft Forums

Minecraft wont let me onto 1 of my 3 worlds. It is sending me an error report.

C:\Users\user\AppData\Roaming\.minecraft\crash-reports\crash-2013-02-18_10.29.47-server.txt

That is the report link I keep getting. Put into your URL and you can see the full report. Mojang said they cannot help me, and said to try the support forums. Please help me ASAP

Open which file and post it where?

[Spoiler]C:\Users\user\AppData\Roaming\.minecraft\crash-reports\crash-2013-02-18_10.29.47-server.txt[/Spoiler]
Like this?

Quote from webrosc

...

Basically just open the file, select everything inside, then copy paste it here.

---- Minecraft Crash Report ----
// Hey, that tickles! Hehehe!

Time: 2/18/13 10:29 AM
Description: Exception in server tick loop

java.util.ConcurrentModificationException
at java.util.HashMap$Ha­erator.nextEntry(Unknown Source)
at java.util.HashMap$ValueIterator.next(Unknown Source)
at aev.a(SourceFile:70)
at abb.a(SourceFile:422)
at im.a(SourceFile:165)
at zz.a(SourceFile:715)
at im.c(SourceFile:104)
at il.<init>(SourceFile:26)
at ik.a(SourceFile:172)
at ik.a(SourceFile:203)
at gm.a(SourceFile:104)
at gm.c(SourceFile:147)
at gm.a(SourceFile:81)
at bec.b(SourceFile:73)
at net.minecraft.server.MinecraftServer.r(SourceFile:762)
at net.minecraft.server.MinecraftServer.q(SourceFile:679)
at bdz.q(SourceFile:117)
at net.minecraft.server.MinecraftServer.run(SourceFile:613)
at fy.run(SourceFile:849)


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

-- System Details --
Details:
Minecraft Version: 1.4.7
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.6.0_20, Sun Microsystems Inc.
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Sun Microsystems Inc.
Memory: 405271744 bytes (386 MB) / 519110656 bytes (495 MB) up to 1037959168 bytes (989 MB)
JVM Flags: 2 total; -Xms512m -Xmx1024m
AABB Pool Size: 1338 (74928 bytes; 0 MB) allocated, 1338 (74928 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: 175 (9800 bytes; 0 MB) allocated, 175 (9800 bytes; 0 MB) used
Player Count: 1 / 8; [iq['Atomicplatinum'/139, l='Atomic', x=-1075.46, y=111.35, z=1920.36]]
Type: Integrated Server (map_client.txt)
Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.

Can this crash be fixed?

And how do I update Java?

Has that world ever crashed before? Crashing/closing the client mid session can often end up in world corruption. Another common cause for world issues lately are jukeboxes with disks in them.

Do you use optifine or any 3rd party launchers like MultiMC? Have you ever ran the world with mods installed?

I have never added a mod, no launchers, and it really has never crashed. This happened out of the blue on creative mode. I've been on this world a lot, it isn't a new world at all. I thought it was a simple error, but I haven't been able to get on that world for about a week now.

Update Java here.

Try force updating minecraft, and running the map on a local server.

I have done all of that just now. Still isn't working.

Since you say it's creative. Had you messed around with jukeboxes or did you have any jukeboxes that may have still had records in them? If so then most likely your fix is to get a world editor (for example MCedit) and open your world in it and remove any jukeboxes. Also look around in the area where you character is in the editor for corrupt chunks. You may have to select the chunk and delete it and regenerate it to make the world stable again.