Modded Server Crash; Don't know what to do

[PieisGEWD!]

Hello. Me and my friend are trying to play together on a forge server with 5 mods. When I run the server, everything runs normally and fine. Although when me or my friend begin to edit terrain (Breaking or placing blocks), the console spits out bunches of code and shuts itself down. I've checked the crash report file and this is what it says:

 

---- Minecraft Crash Report ----

// Everything's going to plan. No, really, that was supposed to happen.

 

Time: 11/25/15 3:10 PM

Description: Exception in server tick loop

 

java.lang.NoClassDefFoundError: net/minecraft/client/Minecraft

at TMIConfig.isMultiplayer(TMIConfig.java:87)

at TMIForgeContainer.playerInteract(TMIForgeContainer.java:48)

at cpw.mods.fml.common.eventhandler.ASMEventHandler_1_TMIForgeContainer_playerInteract_PlayerInteractEvent.invoke(.dynamic)

at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:54)

at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:140)

at net.minecraftforge.event.ForgeEventFactory.onPlayerInteract(ForgeEventFactory.java:100)

at net.minecraft.server.management.ItemInWorldManager.func_73078_a(ItemInWorldManager.java:353)

at net.minecraft.network.NetHandlerPlayServer.func_147346_a(NetHandlerPlayServer.java:556)

at net.minecraft.network.play.client.C08PacketPlayerBlockPlacement.func_148833_a(SourceFile:60)

at net.minecraft.network.play.client.C08PacketPlayerBlockPlacement.func_148833_a(SourceFile:9)

at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212)

at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:165)

at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:659)

at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:334)

at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:547)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427)

at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)

Caused by: java.lang.ClassNotFoundException: net.minecraft.client.Minecraft

at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)

at java.lang.ClassLoader.loadClass(Unknown Source)

at java.lang.ClassLoader.loadClass(Unknown Source)

... 17 more

Caused by: java.lang.RuntimeException: Attempted to load class bao for invalid side SERVER

at cpw.mods.fml.common.asm.transformers.SideTransformer.transform(SideTransformer.java:50)

at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:279)

at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:176)

... 19 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 8.1 (amd64) version 6.3

Java Version: 1.8.0_65, Oracle Corporation

Java VM Version: Java HotSpot 64-Bit Server VM (mixed mode), Oracle Corporation

Memory: 377320496 bytes (359 MB) / 533200896 bytes (508 MB) up to 954728448 bytes (910 MB)

JVM Flags: 0 total;

AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used

IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95

FML: MCP v9.05 FML v7.10.99.99 Minecraft Forge 10.13.4.1558 13 mods loaded, 13 mods active

States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored

UCHIJAAAA mcp{9.05} [Minecraft Coder Pack] (minecraft.jar)

UCHIJAAAA FML{7.10.99.99} [Forge Mod Loader] (forge-1.7.10-10.13.4.1558-1.7.10-universal.jar)

UCHIJAAAA Forge{10.13.4.1558} [Minecraft Forge] (forge-1.7.10-10.13.4.1558-1.7.10-universal.jar)

UCHIJAAAA AM2-Preloader{0.0.2} [AMCore] (minecraft.jar)

UCHIJAAAA TooManyItems{1.7.10} [TooManyItems] (minecraft.jar)

UCHIJAAAA AnimationAPI{1.2.4} [AnimationAPI] (AnimationAPI-1.7.10-1.2.4.jar)

UCHIJAAAA arsmagica2{1.4.0.008} [Ars Magica 2] (1.7.10_AM2-1.4.0.008.jar)

UCHIJAAAA legends{1.1} [Legends Mod] (Legends Core-1.1.jar)

UCHIJAAAA Mantle{1.7.10-0.3.2.jenkins184} [Mantle] (Mantle-1.7.10-0.3.2.jar)

UCHIJAAAA OreSpawn{1.7.10.20.3} [OreSpawn] (orespawn-1.7.10-20.3.zip)

UCHIJAAAA sus{4.2} [superheroes Unlimited Mod] (Superheroes Unlimited Mod-1.7.10-4.2.jar)

UCHIJAAAA susaddon{4.2} [superheroes Unlimited Mod (Part 2)] (Superheroes Unlimited Mod-1.7.10-4.2.jar)

UCHIJAAAA TConstruct{1.7.10-1.8.5.build957} [Tinkers' Construct] (TConstruct-1.7.10-1.8.5.jar)

Mantle Environment: Environment healthy.

TConstruct Environment: Environment healthy.

Profiler Position: N/A (disabled)

Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used

Player Count: 2 / 20; [EntityPlayerMP['mineKrAftEBLe'/528, l='world', x=-215.50, y=69.00, z=13.50], EntityPlayerMP['cartboys'/1610, l='world', x=-226.05, y=66.00, z=89.13]]

Is Modded: Definitely; Server brand changed to 'fml,forge'

Type: Dedicated Server (map_server.txt)

 

I've read up on client-side mods and such and don't understand what it means. If that's what it is, please tell me how to fix it. If not, I have no clue.

Thank you for your time!