[Help test the next generation of Voltz, 3.1.2 beta!]

Hi guys - I'm trying to run 3.1.2 on Ubuntu Linux Server 12.04. Running launch.sh gives me this error (below). Hope this helps.

 

---- Minecraft Crash Report ----
// Hey, that tickles! Hehehe!

Time: 08/12/14 19:27
Description: Exception in server tick loop

java.lang.NoClassDefFoundError: mods/immibis/core/porting/ClientProxy142
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:274)
    at cpw.mods.fml.common.Loader.identifyMods(Loader.java:330)
    at cpw.mods.fml.common.Loader.loadMods(Loader.java:484)
    at cpw.mods.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:99)
    at cpw.mods.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:350)
    at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:69)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:445)
    at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:583)
Caused by: java.lang.ClassNotFoundException: mods.immibis.core.porting.ClientProxy142
    at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:186)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
    ... 9 more
Caused by: java.lang.RuntimeException: Attempted to load class mods/immibis/core/porting/ClientProxy142 for invalid side SERVER
    at cpw.mods.fml.common.asm.transformers.SideTransformer.transform(SideTransformer.java:50)
    at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:274)
    at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:172)
    ... 11 more


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

-- System Details --
Details:
    Minecraft Version: 1.6.4
    Operating System: Linux (amd64) version 3.13.0-32-generic
    Java Version: 1.7.0_65, Oracle Corporation
    Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 1914058392 bytes (1825 MB) / 2075918336 bytes (1979 MB) up to 3113877504 bytes (2969 MB)
    JVM Flags: 2 total; -Xmx3G -Xms2G
    AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
    Suspicious classes: FML and Forge are installed
    IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
    FML: MCP v8.11 FML v6.4.49.965 Minecraft Forge 9.11.1.965 7 mods loaded, 0 mods active
    mcp{8.09} [Minecraft Coder Pack] (minecraft.jar)
    FML{6.4.49.965} [Forge Mod Loader] (Voltz.jar)
    Forge{9.11.1.965} [Minecraft Forge] (Voltz.jar)
    MobiusCore{1.2.2} [MobiusCore] (minecraft.jar)
    AppliedEnergistics-Core{rv14.finale3} [AppliedEnergistics Core] (minecraft.jar)
    CodeChickenCore{0.9.0.7} [codeChicken Core] (minecraft.jar)
    Evoc{1.0.0} [Evoc] (minecraft.jar)
    Profiler Position: N/A (disabled)
    Is Modded: Definitely; Server brand changed to 'fml,forge'
    Type: Dedicated Server (map_server.txt)

 

Cheers,

 

Kingofflonmone