I am running java 8 update 91(64-bit). I've set EULA to true. I have many mods installed and allocated up to 2048M of ram for min and max.  Here is my crash report.

 

---- Minecraft Crash Report ----

 

WARNING: coremods are present:

  LoadingPluginBuildingBricks (BuildingBricks-1.9.4-2.0.4.jar)

Contact their authors BEFORE contacting forge

 

// On the bright side, I bought you a teddy bear!

 

Time: 6/10/16 10:09 PM

Description: Exception in server tick loop

 

net.minecraftforge.fml.common.LoaderException: java.lang.NoClassDefFoundError: net/minecraft/client/Minecraft

at net.minecraftforge.fml.common.LoadController.transition(LoadController.java:179)

at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:556)

at net.minecraftforge.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:92)

at net.minecraftforge.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:320)

at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:118)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:429)

at java.lang.Thread.run(Unknown Source)

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

at com.minimap.XaeroMinimap.<clinit>(XaeroMinimap.java:47)

at java.lang.Class.forName0(Native Method)

at java.lang.Class.forName(Unknown Source)

at net.minecraftforge.fml.common.FMLModContainer.constructMod(FMLModContainer.java:474)

at sun.reflect.GeneratedMethodAccessor13.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 net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:228)

at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:206)

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 net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:135)

at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:525)

... 5 more

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)

... 30 more

Caused by: net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerException: Exception in class transformer net.minecraftforge.fml.common.asm.transformers.SideTransformer@58ffcbd7 from coremod FMLCorePlugin

at net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerWrapper.transform(ASMTransformerWrapper.java:234)

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

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

... 32 more

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

at net.minecraftforge.fml.common.asm.transformers.SideTransformer.transform(SideTransformer.java:49)

at net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerWrapper.transform(ASMTransformerWrapper.java:230)

... 34 more

 

 

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

---------------------------------------------------------------------------------------

 

-- System Details --

Details:

Minecraft Version: 1.9.4

Operating System: Windows 10 (amd64) version 10.0

Java Version: 1.8.0_91, Oracle Corporation

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

Memory: 1595352704 bytes (1521 MB) / 2058354688 bytes (1963 MB) up to 2058354688 bytes (1963 MB)

JVM Flags: 2 total; -Xms2048M -Xmx2048M

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

FML: MCP 9.28 Powered by Forge 12.17.0.1940 27 mods loaded, 27 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{9.19} [Minecraft Coder Pack] (minecraft.jar)

UC FML{8.0.99.99} [Forge Mod Loader] (forge-1.9.4-12.17.0.1940-universal.jar)

UC Forge{12.17.0.1940} [Minecraft Forge] (forge-1.9.4-12.17.0.1940-universal.jar)

UC buildingbrickshooks{1.9.4-2.0.4} [building Bricks Hooks] (minecraft.jar)

UC armorplus{2.3.0} [ArmorPlus] (ArmorPlus2.3.0(1.9.4).jar)

UC bagginses{2.4.2} [bagginses] (Bagginses-1.9.4-2.4.2.jar)

UC BiomesOPlenty{4.1.0.2023} [biomes O' Plenty] (BiomesOPlenty-1.9.4-4.1.0.2023-universal (6).jar)

UC buildingbricks{1.9.4-2.0.4} [building Bricks] (BuildingBricks-1.9.4-2.0.4.jar)

UC chancecubes{1.9.4-2.1.2.106} [Chance Cubes] (ChanceCubes-1.9.4-2.1.2.106.jar)

UC chickens{1.9.4-3.0} [Chickens] (chickens-1.9.4-3.0.jar)

UC cookingforblockheads{3.0.7} [Cooking for Blockheads] (CookingForBlockheads-mc1.9.4-3.0.7.jar)

UC EnderZoo{1.9.4-1.2.2.40} [Ender Zoo] (EnderZoo-1.9.4-1.2.2.40.jar)

UC golems{5.01} [Extra Golems] (ExtraGolems[1.9.4]-5.01.jar)

UC grapple_hooks{1.0.8} [Grapple Hooks] (GrappleHooks-1.9.4-1.0.8.jar)

UC hopperducts{1.4.7} [Hopper Ducts] (hopperducts-mc1.9.4-1.4.7.jar)

UC IronChest{6.0.140.781} [iron Chest] (ironchest-1.9.4-6.0.140.781.jar)

UC fyberbackpack{1.0.2} [Just Backpacks] (justbackpacks-mc1.9.4-1.0.2.jar)

UC jet_packs{1.0.0} [Just JetPacks] (JustJetpacks-1.9.4-1.0.0.jar)

UC mm{1.9.4} [MCrafterzz mod] (MCrafterzz Mod V. 3.0.0 (1.9.4).jar)

UC morefood{1.15d} [More Foods] (morefood-1.9.4-1909-1.16.jar)

UC harvestcraft{1.9.4-pre} [Pam's HarvestCraft] (Pam's HarvestCraft 1.9.4a.jar)

UC parachutemod{1.4.3} [Parachute Mod] (parachutemod-ng-1.9.4-1.4.3-401.jar)

UC reap{1.1.0} [Reap Mod] (ReapMod 1.1.0.jar)

UC Roguelike{1.5.2} [Roguelike Dungeons] (RoguelikeDungeons-1.9.4-1.5.2.jar)

UC AS_Ruins{16.1} [Ruins Spawning System] (Ruins-1.9.4.jar)

UC weaponsplus{1.8.0} [WeaponsPlus] (WeaponsPlus1.8.0.jar)

UE XaeroMinimap{1.9} [Xaero's Minimap] (Xaeros_Minimap_1.9_Forge_1.9.4.jar)

Loaded coremods (and transformers):

LoadingPluginBuildingBricks (BuildingBricks-1.9.4-2.0.4.jar)

  com.hea3ven.buildingbricks.core.load.ClassTransformerBuildingBricks

Profiler Position: N/A (disabled)

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

Type: Dedicated Server (map_server.txt)

you put a client side mod (XaeroMinimap) on the server