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I have a world that i played unmodded, but after i added mods into my minecraft folder, and tried to go back into that world my minecraft crashed. Other worlds are still fine but only that one world cannot be opened. It also failed when i tried to open it with my forge profile. (It crashes when i try to open the world. It will say downloading terrain, then after a while crash)

Here is the crash report.

---- Minecraft Crash Report ----
// On the bright side, I bought you a teddy bear!

Time: 9/1/14 10:43 PM
Description: Ticking memory connection

java.lang.NullPointerException: Ticking memory connection
at avm.a(SourceFile:36)
at ave.a(SourceFile:88)
at aqz.a(SourceFile:404)
at ms.a(SourceFile:166)
at apx.a(SourceFile:781)
at ms.c(SourceFile:101)
at mr.<init>(SourceFile:34)
at mq.a(SourceFile:220)
at mq.a(SourceFile:257)
at oi.a(SourceFile:175)
at oi.c(SourceFile:226)
at oi.a(SourceFile:120)
at nn.c(SourceFile:86)
at nn.a(SourceFile:52)
at ej.a(SourceFile:176)
at nc.c(SourceFile:134)
at net.minecraft.server.MinecraftServer.v(SourceFile:540)
at net.minecraft.server.MinecraftServer.u(SourceFile:453)
at bsx.u(SourceFile:117)
at net.minecraft.server.MinecraftServer.run(SourceFile:369)
at lj.run(SourceFile:628)


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

-- Head --
Stacktrace:
at avm.a(SourceFile:36)
at ave.a(SourceFile:88)
at aqz.a(SourceFile:404)
at ms.a(SourceFile:166)
at apx.a(SourceFile:781)
at ms.c(SourceFile:101)
at mr.<init>(SourceFile:34)
at mq.a(SourceFile:220)
at mq.a(SourceFile:257)
at oi.a(SourceFile:175)
at oi.c(SourceFile:226)
at oi.a(SourceFile:120)
at nn.c(SourceFile:86)
at nn.a(SourceFile:52)
at ej.a(SourceFile:176)

-- Ticking connection --
Details:
Connection: [email protected]
Stacktrace:
at nc.c(SourceFile:134)
at net.minecraft.server.MinecraftServer.v(SourceFile:540)
at net.minecraft.server.MinecraftServer.u(SourceFile:453)
at bsx.u(SourceFile:117)
at net.minecraft.server.MinecraftServer.run(SourceFile:369)
at lj.run(SourceFile:628)

-- System Details --
Details:
Minecraft Version: 1.7.10
Operating System: Windows 8 (amd64) version 6.2
Java Version: 1.7.0_45, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 199731920 bytes (190 MB) / 492916736 bytes (470 MB) up to 1060372480 bytes (1011 MB)
JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
Profiler Position: N/A (disabled)
Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Player Count: 1 / 8; [mw['Zlaize'/5366, l='New Solo', x=-177.02, y=12.00, z=366.48]]
Type: Integrated Server (map_client.txt)
Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.



can someone please help me?

tell me if you need any more information

edit: sorry the world crashed after it showed downloading terrain not generating world

am i allowed to bump my own thread? sorry if im doing something wrong

Thus is usually a issue with a specific tile entity or entity on your map, I would suggest using a tool such as Minecraft Region fixer to attempt to automatically fix it, if it cannot help you, try and isolate the specific region your crashing on (IE: systematically move each region file to another folder other than your save folder and launch it, see if you crash.) Once you have the Region file that is causing your issue, use a tool such as MC-EDIT to remove tile entities and other entities in that region, then replace the rest of your map back in the save folder and play. Of course as always back up your map before fiddling with it like this.



(To read up on what a tile entity is go here: http://minecraft.gamepedia.com/Block_entity and a regular entity: http://minecraft.gamepedia.com/Entity )

Minecraft Region Fixer: http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-tools/1261480-minecraft-region-fixer

MC-EDIT: http://www.mcedit.net/

Thank if i helped

Thanks

i will try what you said

edit: Tried the minecraft region fixer, it failed to fix it. when i ran it it said no chunk problems found and no region problems found. am going to try using mcedit now

edit2: i went into mcedit and it could load the world just fine. i have no idea what the error was so i couldnt fix it...

it just keeps going into

loading world

building terrain

downloading terrain

and then crashes if it helps