Server crash: duplicate key:mod_NotEnoughItems

[zaery]

Crash log:

---- Minecraft Crash Report ----
// Would you like a cupcake?
 
Time: 11/21/12 6:53 PM
Description: Exception in server tick loop
 
java.lang.IllegalArgumentException: duplicate key: mod_NotEnoughItems
        at com.google.common.base.Preconditions.checkArgument(Preconditions.java:119)
        at com.google.common.collect.RegularImmutableMap.<init>(RegularImmutableMap.java:70)
        at com.google.common.collect.ImmutableMap$Builder.fromEntryList(ImmutableMap.java:250)
        at com.google.common.collect.ImmutableMap$Builder.build(ImmutableMap.java:236)
        at com.google.common.collect.Maps.uniqueIndex(Maps.java:638)
        at com.google.common.collect.Maps.uniqueIndex(Maps.java:612)
        at cpw.mods.fml.common.Loader.identifyMods(Loader.java:336)
        at cpw.mods.fml.common.Loader.loadMods(Loader.java:457)
        at cpw.mods.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:80)
        at cpw.mods.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:342)
        at hg.c(DedicatedServer.java:49)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:454)
        at fp.run(SourceFile:818)
 
Relevant Details:
- Minecraft Version: 1.4.2
- Operating System: Linux (amd64) version 2.6.32-36-generic
- Java Version: 1.6.0_20, Sun Microsystems Inc.
- Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Sun Microsystems Inc.
- Memory: 441850320 bytes (421 MB) / 514523136 bytes (490 MB) up to 1908932608 bytes (1820 MB)
- JVM Flags: 2 total; -Xms512M -Xmx2G
- AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
- FML: ~ERROR~ NullPointerException: null
- Is Modded: Definitely; 'forge,fml'
- Profiler Position: N/A (disabled)
- Type: Dedicated Server

I just updated to whatever the latest version is, downloaded it from the launcher. I searched, but nothing matched the duplicate key bit. Any solutions?

 

[b0bst3r]

- Java Version: 1.6.0_20, Sun Microsystems Inc.
Update to Java 7

 

[Greedseed]

Take mod_NotEnoughItems out of your server mods folder.

 

[zaery]

My server's running on a friend's physical server, I'll need to ask him before I go updating or installing anything. I would remove mod_NotEnoughItems out of the mods folder, but I can't see anything in the mods folder related to NEI at all.

Update: Got in touch with the physical owner, updated java, same(almost) error log:

---- Minecraft Crash Report ----
// I blame Dinnerbone.
 
Time: 11/23/12 5:29 PM
Description: Exception in server tick loop
 
java.lang.IllegalArgumentException: duplicate key: mod_NotEnoughItems
        at com.google.common.base.Preconditions.checkArgument(Preconditions.java:119)
        at com.google.common.collect.RegularImmutableMap.<init>(RegularImmutableMap.java:70)
        at com.google.common.collect.ImmutableMap$Builder.fromEntryList(ImmutableMap.java:250)
        at com.google.common.collect.ImmutableMap$Builder.build(ImmutableMap.java:236)
        at com.google.common.collect.Maps.uniqueIndex(Maps.java:638)
        at com.google.common.collect.Maps.uniqueIndex(Maps.java:612)
        at cpw.mods.fml.common.Loader.identifyMods(Loader.java:336)
        at cpw.mods.fml.common.Loader.loadMods(Loader.java:457)
        at cpw.mods.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:80)
        at cpw.mods.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:342)
        at hg.c(DedicatedServer.java:49)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:454)
        at fp.run(SourceFile:818)
 
Relevant Details:
- Minecraft Version: 1.4.2
- Operating System: Linux (amd64) version 2.6.32-36-generic
- Java Version: 1.7.0_09, Oracle Corporation
- Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
- Memory: 429279200 bytes (409 MB) / 514523136 bytes (490 MB) up to 1908932608 bytes (1820 MB)
- JVM Flags: 2 total; -Xms512M -Xmx2G
- AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
- FML: ~ERROR~ NullPointerException: null
- Is Modded: Definitely; 'forge,fml'
- Profiler Position: N/A (disabled)
- Type: Dedicated Server