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Recently playing in my single player world I was moving chests to my new storage area and I clicked on a chest the game crashed with the following crash report:

---- Minecraft Crash Report ----
// There are four lights!
Time: 2/16/13 3:20 PM
Description: Ticking memory connection
java.lang.NullPointerException
at ur.f(SourceFile:129)
at ur.h(SourceFile:143)
at qw.a(SourceFile:219)
at px.c_(SourceFile:189)
at qx.r(SourceFile:388)
at qx.c(SourceFile:380)
at md.j_(EntityLiving.java:807)
at qx.j_(SourceFile:200)
at iq.g(SourceFile:175)
at iv.a(SourceFile:199)
at eb.a(SourceFile:136)
at cf.b(SourceFile:55)
at iv.d(SourceFile:57)
at iw.b(SourceFile:39)
at bec.b(SourceFile:84)
at net.minecraft.server.MinecraftServer.r(SourceFile:762)
at net.minecraft.server.MinecraftServer.q(SourceFile:679)
at bdz.q(IntegratedServer.java:170)
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 (amd64) version 6.1
Java Version: 1.6.0_27, Sun Microsystems Inc.
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Sun Microsystems Inc.
Memory: 2456563704 bytes (2342 MB) / 3113877504 bytes (2969 MB) up to 3113877504 bytes (2969 MB)
JVM Flags: 2 total; -Xms3072m -Xmx3072m
AABB Pool Size: 3203 (179368 bytes; 0 MB) allocated, 2982 (166992 bytes; 0 MB) used
Suspicious classes: IWrUpdater, Config, WrUpdates, ...]
IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63
Profiler Position: N/A (disabled)
Vec3 Pool Size: 501 (28056 bytes; 0 MB) allocated, 494 (27664 bytes; 0 MB) used
Player Count: 1 / 8; [iq['xSemperFi'/125, l='punchwood island', x=-382.28, y=46.00, z=358.44]]
Type: Integrated Server (map_client.txt)
Is Modded: Very likely; Jar signature invalidated

I also took a few screenshots to show a visual:









So has anyone else experienced this before? I have a backup for my world but I've done alot since that backup so I'd like to know if there is ANY way to fix this besides fixing it in-game (seems like an awful waste of time to fix in-game). Any help would be greatly appreciated


Thanks for reading!

Quote from Orangeline92

Recently playing in my single player world I was moving chests to my new storage area and I clicked on a chest the game crashed with the following crash report:

---- Minecraft Crash Report ----
// There are four lights!
Time: 2/16/13 3:20 PM
Description: Ticking memory connection
java.lang.NullPointerException
at ur.f(SourceFile:129)
at ur.h(SourceFile:143)
at qw.a(SourceFile:219)
at px.c_(SourceFile:189)
at qx.r(SourceFile:388)
at qx.c(SourceFile:380)
at md.j_(EntityLiving.java:807)
at qx.j_(SourceFile:200)
at iq.g(SourceFile:175)
at iv.a(SourceFile:199)
at eb.a(SourceFile:136)
at cf.b(SourceFile:55)
at iv.d(SourceFile:57)
at iw.b(SourceFile:39)
at bec.b(SourceFile:84)
at net.minecraft.server.MinecraftServer.r(SourceFile:762)
at net.minecraft.server.MinecraftServer.q(SourceFile:679)
at bdz.q(IntegratedServer.java:170)
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 (amd64) version 6.1
Java Version: 1.6.0_27, Sun Microsystems Inc.
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Sun Microsystems Inc.
Memory: 2456563704 bytes (2342 MB) / 3113877504 bytes (2969 MB) up to 3113877504 bytes (2969 MB)
JVM Flags: 2 total; -Xms3072m -Xmx3072m
AABB Pool Size: 3203 (179368 bytes; 0 MB) allocated, 2982 (166992 bytes; 0 MB) used
Suspicious classes: IWrUpdater, Config, WrUpdates, ...]
IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63
Profiler Position: N/A (disabled)
Vec3 Pool Size: 501 (28056 bytes; 0 MB) allocated, 494 (27664 bytes; 0 MB) used
Player Count: 1 / 8; [iq['xSemperFi'/125, l='punchwood island', x=-382.28, y=46.00, z=358.44]]
Type: Integrated Server (map_client.txt)
Is Modded: Very likely; Jar signature invalidated

I also took a few screenshots to show a visual:









So has anyone else experienced this before? I have a backup for my world but I've done alot since that backup so I'd like to know if there is ANY way to fix this besides fixing it in-game (seems like an awful waste of time to fix in-game). Any help would be greatly appreciated


Thanks for reading!

It would seem that the world corrupted. If you want to drain the water, download single player commands, and work out with that. It appears at least some of your old build remains. There is no way to, per se, rollback, the corruption, not without restoring from your said backup. Also, what mods do you have?

Oh, and please post here for modded clients: http://www.minecraftforum.net/forum/196-modded-client-support/

No mods, plain vanilla. I use magic launcher and vatticcs faithful texture pack. Thats all. Guess I'll just have to use my previous world save on my external hard drive. *sigh*