AR Crash in MultiMC

[09:20:48] [main/INFO] [FML]: -- System Details --
Details:
	Minecraft Version: 1.12
	Operating System: Linux (amd64) version 4.10.0-26-generic
	Java Version: 1.8.0_131, Oracle Corporation
	Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 898602704 bytes (856 MB) / 1658322944 bytes (1581 MB) up to 3817865216 bytes (3641 MB)
	JVM Flags: 2 total; -Xms1024m -Xmx4096m
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	FML:
	Loaded coremods (and transformers):
Ar_CorePlugin (additionalresources-0.1.2-1.9r21+6e86a3e.jar)

	GL info: ' Vendor: 'NVIDIA Corporation' Version: '4.5.0 NVIDIA 375.66' Renderer: 'GeForce GTX 1050 Ti/PCIe/SSE2'
[09:20:49] [main/INFO] [FML]: MinecraftForge v14.21.1.2395 Initialized
[09:20:49] [main/INFO] [FML]: Replaced 921 ore ingredients
[09:20:49] [main/INFO] [FML]: Found 0 mods from the command line. Injecting into mod discoverer
[09:20:49] [main/INFO] [FML]: Searching /home/james/Programs/minecraft/MultiMC/ForgeTesting1120/minecraft/mods for mods
[09:20:50] [main/INFO] [FML]: Forge Mod Loader has identified 5 mods to load
[09:20:50] [main/INFO]: Reloading ResourceManager: Default, FMLFileResourcePack:Forge Mod Loader, FMLFileResourcePack:Minecraft Forge
[09:20:50] [main/INFO] [STDOUT]: [net.minecraft.init.Bootstrap:func_179870_a:552]: ---- Minecraft Crash Report ----

WARNING: coremods are present:
  Ar_CorePlugin (additionalresources-0.1.2-1.9r21+6e86a3e.jar)
Contact their authors BEFORE contacting forge

// This is a token for 1 free hug. Redeem at your nearest Mojangsta: [~~HUG~~]

Time: 7/8/17 9:20 AM
Description: Initializing game

java.lang.AbstractMethodError
	at net.minecraftforge.fml.client.FMLClientHandler.addModAsResource(FMLClientHandler.java:654)
	at net.minecraftforge.fml.common.FMLCommonHandler.addModToResourcePack(FMLCommonHandler.java:542)
	at net.minecraftforge.fml.common.LoadController.buildModList(LoadController.java:129)
	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:498)
	at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
	at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150)
	at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76)
	at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399)
	at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71)
	at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
	at com.google.common.eventbus.EventBus.post(EventBus.java:217)
	at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:337)
	at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:546)
	at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:227)
	at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:466)
	at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:377)
	at net.minecraft.client.main.Main.main(SourceFile:123)
	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:498)
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
	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:498)
	at org.multimc.onesix.OneSixLauncher.launchWithMainClass(OneSixLauncher.java:236)
	at org.multimc.onesix.OneSixLauncher.launch(OneSixLauncher.java:297)
	at org.multimc.EntryPoint.listen(EntryPoint.java:162)
	at org.multimc.EntryPoint.main(EntryPoint.java:53)


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

-- Head --
Thread: Client thread
Stacktrace:
	at net.minecraftforge.fml.client.FMLClientHandler.addModAsResource(FMLClientHandler.java:654)
	at net.minecraftforge.fml.common.FMLCommonHandler.addModToResourcePack(FMLCommonHandler.java:542)
	at net.minecraftforge.fml.common.LoadController.buildModList(LoadController.java:129)
	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:498)
	at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
	at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150)
	at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76)
	at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399)
	at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71)
	at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
	at com.google.common.eventbus.EventBus.post(EventBus.java:217)
	at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:337)
	at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:546)
	at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:227)
	at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:466)

-- Initialization --
Details:
Stacktrace:
	at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:377)
	at net.minecraft.client.main.Main.main(SourceFile:123)
	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:498)
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
	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:498)
	at org.multimc.onesix.OneSixLauncher.launchWithMainClass(OneSixLauncher.java:236)
	at org.multimc.onesix.OneSixLauncher.launch(OneSixLauncher.java:297)
	at org.multimc.EntryPoint.listen(EntryPoint.java:162)
	at org.multimc.EntryPoint.main(EntryPoint.java:53)

-- System Details --
Details:
	Minecraft Version: 1.12
	Operating System: Linux (amd64) version 4.10.0-26-generic
	Java Version: 1.8.0_131, Oracle Corporation
	Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 1617409112 bytes (1542 MB) / 1810890752 bytes (1727 MB) up to 3817865216 bytes (3641 MB)
	JVM Flags: 2 total; -Xms1024m -Xmx4096m
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	FML: MCP 9.40 Powered by Forge 14.21.1.2395 5 mods loaded, 5 mods active
	States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
	U	minecraft{1.12} [Minecraft] (minecraft.jar)
	U	mcp{9.19} [Minecraft Coder Pack] (minecraft.jar)
	U	FML{8.0.99.99} [Forge Mod Loader] (forge-1.12-14.21.1.2395-universal.jar)
	U	forge{14.21.1.2395} [Minecraft Forge] (forge-1.12-14.21.1.2395-universal.jar)
	U	additionalresources{0.1.1} [Additional Resources] (additionalresources-0.1.2-1.9r21+6e86a3e.jar)
	Loaded coremods (and transformers):
Ar_CorePlugin (additionalresources-0.1.2-1.9r21+6e86a3e.jar)

	GL info: ' Vendor: 'NVIDIA Corporation' Version: '4.5.0 NVIDIA 375.66' Renderer: 'GeForce GTX 1050 Ti/PCIe/SSE2'
	Launched Version: MultiMC5
	LWJGL: 2.9.1
	OpenGL: GeForce GTX 1050 Ti/PCIe/SSE2 GL version 4.5.0 NVIDIA 375.66, NVIDIA Corporation
	GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

	Using VBOs: Yes
	Is Modded: Definitely; Client brand changed to 'fml,forge'
	Type: Client (map_client.txt)
	Resource Packs:
	Current Language: English (US)
	Profiler Position: N/A (disabled)
	CPU: 8x Intel(R) Core(TM) i7-4790 CPU @ 3.60GHz
[09:20:50] [main/INFO] [STDOUT]: [net.minecraft.init.Bootstrap:func_179870_a:552]: #@!@# Game crashed! Crash report saved to: #@!@# /home/james/Programs/minecraft/MultiMC/ForgeTesting1120/minecraft/crash-reports/crash-2017-07-08_09.20.50-client.txt