Minecraft Forums

So, obviously I just downloaded a Mekanism mods for my Minecraft, but when I try to launch my Minecraft it show a crash report....

This is the crash report :

---- Minecraft Crash Report ----
// There are four lights!

Time: 12/6/14 11:43 AM
Description: There was a severe problem during mod loading that has caused the game to fail

cpw.mods.fml.common.LoaderException: java.lang.NoSuchMethodError: scala.Predef$.ArrowAssoc(Ljava/lang/Object;)Ljava/lang/Object;
at cpw.mods.fml.common.LoadController.transition(LoadController.java:162)
at cpw.mods.fml.common.Loader.preinitializeMods(Loader.java:515)
at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:239)
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:480)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:867)
at net.minecraft.client.main.Main.main(SourceFile:148)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:134)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
Caused by: java.lang.NoSuchMethodError: scala.Predef$.ArrowAssoc(Ljava/lang/Object;)Ljava/lang/Object;
at codechicken.multipart.MultipartGenerator$.registerTrait(MultipartGenerator.scala:165)
at codechicken.multipart.MultipartGenerator$.registerTrait(MultipartGenerator.scala:150)
at codechicken.multipart.handler.MultipartProxy_serverImpl.preInit(proxies.scala:35)
at codechicken.multipart.handler.MultipartMod$.preInit(MultipartMod.scala:16)
at codechicken.multipart.handler.MultipartMod.preInit(MultipartMod.scala)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at cpw.mods.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:513)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:208)
at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:187)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:118)
at cpw.mods.fml.common.Loader.preinitializeMods(Loader.java:513)
... 10 more


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

-- System Details --
Details:
Minecraft Version: 1.7.10
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 86483552 bytes (82 MB) / 229408768 bytes (218 MB) up to 523501568 bytes (499 MB)
JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M -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: 0, tallocated: 0
FML: MCP v9.05 FML v7.10.85.1230 Minecraft Forge 10.13.2.1230 Optifine OptiFine_1.7.10_HD_A4 12 mods loaded, 12 mods active
mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized
FML{7.10.85.1230} [Forge Mod Loader] (forge-1.7.10-10.13.2.1230.jar) Unloaded->Constructed->Pre-initialized
Forge{10.13.2.1230} [Minecraft Forge] (forge-1.7.10-10.13.2.1230.jar) Unloaded->Constructed->Pre-initialized
CodeChickenCore{1.0.3.26} [CodeChicken Core] (minecraft.jar) Unloaded->Constructed->Pre-initialized
NotEnoughItems{1.0.3.60} [Not Enough Items] (Not-Enough-Items-1.7.10.jar) Unloaded->Constructed->Pre-initialized
IronChest{6.0.62.742} [Iron Chest] (Iron-Chests-Mod-1.7.10.jar) Unloaded->Constructed->Pre-initialized
ForgeMultipart{1.1.0.314} [Forge Multipart] (ForgeMultipart-1.7.10-1.1.0.314-universal.jar) Unloaded->Constructed->Errored
Mekanism{7.1.1} [Mekanism] (Mekanism-1.7.10-7.1.1.127 (1).jar) Unloaded->Constructed->Pre-initialized
MekanismGenerators{7.1.1} [MekanismGenerators] (MekanismGenerators-1.7.10-7.1.1.127 (1).jar) Unloaded->Constructed->Pre-initialized
MekanismTools{7.1.1} [MekanismTools] (MekanismTools-1.7.10-7.1.1.127.jar) Unloaded->Constructed->Pre-initialized
McMultipart{1.1.0.314} [Minecraft Multipart Plugin] (ForgeMultipart-1.7.10-1.1.0.314-universal.jar) Unloaded->Constructed->Pre-initialized
ForgeMicroblock{1.1.0.314} [Forge Microblocks] (ForgeMultipart-1.7.10-1.1.0.314-universal.jar) Unloaded->Constructed->Errored

Before I download Mekanism mods everything work fine......But it crash after download the mod....

Pls help,

Tq

Where is MDK?

Read the instructions on Mekanism installation carefully:

http://aidancbrady.com/mekanism/download/