I'm making a mod pack an want to include mekanism. However, after installing mechanism mc crashes os start up. The game loads when I load it with all the mods except enderio and tc. It also loads with all the mods except mekanism. I have tried mekanism with tc and no enderio, mekanism with endure and no tc but the crash persist.

If there is a fix, or something I am doing wrong please tell me.

Thanks for the help :)

Here is the crash report when all 3 mods are installed.

---- Minecraft Crash Report ----
// Ooh. Shiny.

Time: 11/06/15 13:09
Description: There was a severe problem during mod loading that has caused the game to fail

cpw.mods.fml.common.LoaderException: java.lang.NoClassDefFoundError: tconstruct/library/weaponry/AmmoWeapon
at cpw.mods.fml.common.LoadController.transition(LoadController.java:163)
at cpw.mods.fml.common.Loader.loadMods(Loader.java:544)
at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:208)
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:480)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:878)
at net.minecraft.client.main.Main.main(SourceFile:148)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
Caused by: java.lang.NoClassDefFoundError: tconstruct/library/weaponry/AmmoWeapon
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
at cpw.mods.fml.common.ProxyInjector.inject(ProxyInjector.java:42)
at cpw.mods.fml.common.FMLModContainer.constructMod(FMLModContainer.java:512)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
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:212)
at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:190)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
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:119)
at cpw.mods.fml.common.Loader.loadMods(Loader.java:513)
... 10 more
Caused by: java.lang.ClassNotFoundException: tconstruct.library.weaponry.AmmoWeapon
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 36 more
Caused by: java.lang.NoClassDefFoundError: tconstruct/library/weaponry/AmmoItem
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)
... 38 more
Caused by: java.lang.ClassNotFoundException: tconstruct.library.weaponry.AmmoItem
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:101)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 42 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: Mac OS X (x86_64) version 10.10.3
Java Version: 1.8.0_40, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 126766096 bytes (120 MB) / 274804736 bytes (262 MB) up to 1060372480 bytes (1011 MB)
JVM Flags: 5 total; -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: 0, tallocated: 0
FML: MCP v9.05 FML v7.10.99.99 Minecraft Forge 10.13.4.1448 30 mods loaded, 30 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
UC mcp{9.05} Minecraft Coder Pack
UC FML{7.10.99.99} Forge Mod Loader
UC Forge{10.13.4.1448} Minecraft Forge
UC appliedenergistics2-core{rv2-stable-6} AppliedEnergistics2 Core
UC Aroma1997Core{1.0.2.13} Aroma1997Core
UC CodeChickenCore{1.0.7.46} CodeChicken Core
UC NotEnoughItems{1.0.5.110} Not Enough Items
UC appliedenergistics2{rv2-stable-6} Applied Energistics 2
UC Aroma1997CoreHelper{1.0.2.13} Aroma1997Core|Helper
UC Aroma1997sDimension{1.0} Aroma1997's Dimensional World
UC BiomesOPlenty{2.1.0} Biomes O' Plenty
UC ChickenChunks{1.3.4.19} ChickenChunks
UC ForgeMultipart{1.2.0.345} Forge Multipart
UC chisel{2.3.10.37} Chisel 2
UC Mekanism{8.1.4} Mekanism
UE EnderIO{1.7.10-2.2.8.381} Ender IO
UC EnderStorage{1.4.7.36} EnderStorage
UC Mantle{1.7.10-0.3.2.jenkins184} Mantle
UE TConstruct{1.7.10-1.8.5.build957} Tinkers' Construct
UC ExtraUtilities{1.2.6} Extra Utilities
UC journeymap{5.0.1} JourneyMap
UC MekanismGenerators{8.1.4} MekanismGenerators
UC MekanismTools{8.1.4} MekanismTools
UC Translocator{1.1.2.15} Translocator
UC WR-CBE|Core{1.4.1.9} WR-CBE Core
UC WR-CBE|Addons{1.4.1.9} WR-CBE Addons
UC WR-CBE|Logic{1.4.1.9} WR-CBE Logic
UC McMultipart{1.2.0.345} Minecraft Multipart Plugin
UC aobd{2.6.3} Another One Bites The Dust
UC ForgeMicroblock{1.2.0.345} Forge Microblocks
GL info: ' Vendor: 'ATI Technologies Inc.' Version: '2.1 ATI-1.32.20' Renderer: 'AMD Radeon HD 6750M OpenGL Engine'
AE2 Version: stable rv2-stable-6 for Forge 10.13.2.1291
Mantle Environment: Environment healthy.
TConstruct Environment: Environment healthy.

there is no reason ender storage to cause any problems..this isnt ender storages fault.
it looks like your just using outdated mod versions.

you should be getting the latest mod versions from the following sites
Tinkers: http://www.curse.com/mc-mods/minecraft/tinkers-construct#t1:other-downloads
EnderIO: http://ci.tterrag.com/job/EnderIO/
Mekanism: http://aidancbrady.com/mekanism/download/

you should also make sure your using a recent version of forge, like V1420 or V1428+

enterprise12nx I am using the latest versions, (not including the EnderIo Beta release) thanks anyway.

BobbyMcJoe removing ender storage fixed the issue thank you.

I have now added other mods and tried to add ender storage back in, its working now, i don't know why it wasn't before.

Try taking out Ender Storage. I love it, but it messes up stuff a lot. Just a hunch, but it may be worth trying.

the enderio betas fix a lot of bugs happening between Mekanism, i have 150+ mods in my modpack which i work on and keep updated for 2 years now, its very stable since i know coding, etc.

im using all the mods you mentioned on the latest versions and more, ender storage has nothing in it which would mess with other mods, it literally replaces the old ender storage from vanilla MC