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modloader not working

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    Tree Puncher

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Posted 18 May 2012 - 02:35 PM

Mod loader 1.2.5 crash minecraft. I saw many other topic from a lot of players saying the same thing as me. I saw the same error in their topics.

So for the minecraft 1.2.5 its impossible to add mods.  I made a server with few mods but I cant connect on it. Others players experiencing the same problem when they try to connect on theit own server too.

For builcraft, industrial craft redpower and forestry. We are forced to stay on minecraft 1.1

You have to do something to find what is crash minecraft. The error reporthing modloader crash minecraft.

I using windows 7.

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  • Location: Sweden
  • Minecraft: Mallaceus

Posted 18 May 2012 - 03:51 PM

3 Things,

1. Either your modloader iis not for your server, (Because there is no official Modloader for server,)


2. You are using non-server mods, or mods not compatible for MC 1.2.x,


3. You don't simply have all the mods installed onto your friends, and your own system.

Thats the only thing i can think off, but, as EVERYONE says here,


Without it no-one will be able to help!

We can't see your problem, we can't see what error the server is giving you, we can't help you from what's unableing you to connect!!

So if you would please,

Post it. All of it.


1. Server error log

2. Minecraft Error (What message comes up when you disconnects)

3. What mods you are using.

And tip,

There is no official Modloader for servers,

ONLY MODLOADERMP. Which means if you are using SSP Modloader, GG With you server.jar.

GL and hope it works.

And i also hope you will post the logs.

Death shall not be the end... The Life will continue even after the credits.



    Tree Puncher

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Posted 18 May 2012 - 07:00 PM

I use mmodloadermp end forge because because some mode need it to be install.
The mods are buildcraft, industrialcraft 2, redpower and forestry are for 1.2.5 version of minecraft server.

I followed some tuto too.

I am on windows 7 and java 7jre.

Before my server working but I cant connect to the server but now the server dont open too.

I saw on other forum many plsyers or admin having the same problem as me.

Its why I think something wrong we modloader.



Posted 18 May 2012 - 07:58 PM

Here is what the cmd window is giving me when I try to run the server with the Zeppelin mod (which IS supported by ModLoader)

Note: I am using modloadermp.

[INFO] ModLoader Server 1.2.5v1 Initializing...
[SEVERE] Unexpected exception
java.lang.RuntimeException: ModLoader has failed to initialize.
    at ModLoader.throwException(ModLoader.java:1646)
    at ModLoader.init(ModLoader.java:611)
    at ModLoader.initialize(ModLoader.java:1709)
    at net.minecraft.server.MinecraftServer.s(MinecraftServer.java:160)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:430)
    at dn.run(SourceFile:492)
Caused by: java.lang.RuntimeException: Exception occured in ModLoader
    at ModLoader.throwException(ModLoader.java:1646)
    at ModLoader.throwException(ModLoader.java:1651)
    at ModLoader.addMod(ModLoader.java:158)
    at ModLoader.readFromModFolder(ModLoader.java:981)
    at ModLoader.init(ModLoader.java:580)
    ... 4 more
Caused by: java.lang.NoClassDefFoundError: ajw
    at java.lang.Class.getDeclaredFields0(Native Method)
    at java.lang.Class.privateGetDeclaredFields(Unknown Source)
    at java.lang.Class.getDeclaredFields(Unknown Source)
    at ModLoader.setupProperties(ModLoader.java:1340)
    at ModLoader.addMod(ModLoader.java:142)
    ... 6 more
Caused by: java.lang.ClassNotFoundException: ajw
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    ... 11 more