Minecraft Forums

I have been playing on a world for a while. I was playing it earlier today and everything was fine, but then I took a small break and came back and I can't open it now. I don't know what I should do so any help would be appreciated. If I need to add any info just tell me.

What happens when you enter the world?

Download and run this, when minecraft opens go into your world.

Then open the cmd window right-click it; select all press enter and paste it here.

When I try to enter my world it will open it and say "Building Terrain' for a few seconds then it will go back to the select world screen.

You didn't post a link to anything. Also I am on a Mac, so just wanted to inform you of that.

Ohh update. I had the game open as I was opening the world to see what would happen and minecraft crashed. I am going to paste the log into the post.




Minecraft has crashed!
----------------------

Minecraft has stopped running because it encountered a problem; Sending packet

A full error report has been saved to /Users/Nick/Library/Application Support/minecraft/crash-reports/crash-2013-03-30_19.41.29-server.txt - Please include a copy of that file (Not this screen!) if you report this crash to anyone; without it, they will not be able to help fix the crash



--- BEGIN ERROR REPORT 963fcbeb --------
Full report at:
/Users/Nick/Library/Application Support/minecraft/crash-reports/crash-2013-03-30_19.41.29-server.txt
Please show that file to Mojang, NOT just this screen!

Generated 3/30/13 7:41 PM

-- Head --
Stacktrace:
at ch.b(SourceFile:107)
at ch.a(SourceFile:39)

-- Packet being sent --
Details:
Packet ID: 4
Packet class: fh
Stacktrace:
at jh.b(SourceFile:430)
at gu.b(SourceFile:669)
at gu.a(SourceFile:79)
at bjk.b(SourceFile:73)
at net.minecraft.server.MinecraftServer.r(SourceFile:480)
at net.minecraft.server.MinecraftServer.q(SourceFile:397)
at bjh.q(SourceFile:122)
at net.minecraft.server.MinecraftServer.run(SourceFile:331)
at gp.run(SourceFile:573)

-- System Details --
Details:
Minecraft Version: 1.5.1
Operating System: Mac OS X (x86_64) version 10.8.3
Java Version: 1.6.0_43, Apple Inc.
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Apple Inc.
Memory: 146450112 bytes (139 MB) / 924487680 bytes (881 MB) up to 1065025536 bytes (1015 MB)
JVM Flags: 3 total; -Xbootclasspath/a:/System/Library/PrivateFrameworks/JavaApplicationLauncher.framework/Resources/LauncherSupport.jar -Xms512M -Xmx1024M
AABB Pool Size: 1043053 (58410968 bytes; 55 MB) allocated, 1043053 (58410968 bytes; 55 MB) used
Suspicious classes: [com.prupe.mcpatcher.MCPatcherUtils, Config, MCLogger, ...], [com.prupe.mcpatcher.mod.ColorizeItem, AAHelper, TessellatorUtils, ...]
IntCache: cache: 0, tcache: 3, allocated: 5, tallocated: 59
Profiler Position: N/A (disabled)
Vec3 Pool Size: 77255 (4326280 bytes; 4 MB) allocated, 77255 (4326280 bytes; 4 MB) used
Player Count: 0 / 8; []
Type: Integrated Server (map_client.txt)
Is Modded: Very likely; Jar signature invalidated

java.lang.NullPointerException
at ch.b(SourceFile:107)
at ch.a(SourceFile:39)
at jh.b(SourceFile:430)
at gu.b(SourceFile:669)
at gu.a(SourceFile:79)
at bjk.b(SourceFile:73)
at net.minecraft.server.MinecraftServer.r(SourceFile:480)
at net.minecraft.server.MinecraftServer.q(SourceFile:397)
at bjh.q(SourceFile:122)
at net.minecraft.server.MinecraftServer.run(SourceFile:331)
at gp.run(SourceFile:573)
--- END ERROR REPORT c2e2609c ----------

-EDITED-

Nevermind still need halp.