Quark crashes when trying to load with Decocraft.

I'm using multimc with forge and liteloader.

crash log:
---- Minecraft Crash Report ----

WARNING: coremods are present:
LoadingPlugin (Quark-r1.4-122.jar)
Contact their authors BEFORE contacting forge

// Oh - I know what I did wrong!

Time: 5/12/18 11:05 PM
Description: There was a severe problem during mod loading that has caused the game to fail

net.minecraftforge.fml.common.LoaderExceptionModCrash: Caught exception from Decocraft (props)
Caused by: java.lang.NoClassDefFoundError: com/mia/craftstudio/IPackReaderCallback
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at net.minecraftforge.fml.common.FMLModContainer.constructMod(FMLModContainer.java:522)
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.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$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
at com.google.common.eventbus.EventBus.post(EventBus.java:217)
at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:271)
at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:249)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
at com.google.common.eventbus.Subscriber$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:148)
at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:568)
at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:231)
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(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:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
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 org.multimc.onesix.OneSixLauncher.launchWithMainClass(OneSixLauncher.java:196)
at org.multimc.onesix.OneSixLauncher.launch(OneSixLauncher.java:231)
at org.multimc.EntryPoint.listen(EntryPoint.java:143)
at org.multimc.EntryPoint.main(EntryPoint.java:34)
Caused by: java.lang.ClassNotFoundException: com.mia.craftstudio.IPackReaderCallback
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 47 more
Caused by: java.lang.NullPointerException

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

-- System Details --
Details:
Minecraft Version: 1.12.2
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_161, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 983594872 bytes (938 MB) / 1301807104 bytes (1241 MB) up to 6988759040 bytes (6665 MB)
LiteLoader Brand: LiteLoader startup incomplete
LiteLoader Mods: LiteLoader startup incomplete
LaunchWrapper: 24 active transformer(s)
- Transformer: net.minecraftforge.fml.common.asm.transformers.PatchingTransformer
- Transformer: org.spongepowered.asm.mixin.transformer.Proxy
- Transformer: com.mumfrey.liteloader.transformers.event.EventProxyTransformer
- Transformer: com.mumfrey.liteloader.launch.LiteLoaderTransformer
- Transformer: com.mumfrey.liteloader.client.transformers.CrashReportTransformer
- Transformer: org.spongepowered.asm.mixin.transformer.Proxy
- Transformer: $wrapper.net.minecraftforge.fml.common.asm.transformers.BlamingTransformer
- Transformer: $wrapper.net.minecraftforge.fml.common.asm.transformers.SideTransformer
- Transformer: $wrapper.net.minecraftforge.fml.common.asm.transformers.EventSubscriptionTransformer
- Transformer: $wrapper.net.minecraftforge.fml.common.asm.transformers.EventSubscriberTransformer
- Transformer: $wrapper.vazkii.quark.base.asm.ClassTransformer
- Transformer: net.minecraftforge.fml.common.asm.transformers.DeobfuscationTransformer
- Transformer: net.minecraftforge.fml.common.asm.transformers.AccessTransformer
- Transformer: net.minecraftforge.fml.common.asm.transformers.ModAccessTransformer
- Transformer: net.minecraftforge.fml.common.asm.transformers.ItemStackTransformer
- Transformer: net.minecraftforge.fml.common.asm.transformers.ItemBlockTransformer
- Transformer: net.minecraftforge.fml.common.asm.transformers.ItemBlockSpecialTransformer
- Transformer: net.minecraftforge.fml.common.asm.transformers.TerminalTransformer
- Transformer: org.spongepowered.asm.mixin.transformer.Proxy
- Transformer: com.mumfrey.liteloader.transformers.event.EventTransformer
- Transformer: com.mumfrey.liteloader.common.transformers.LiteLoaderPacketTransformer
- Transformer: com.mumfrey.liteloader.transformers.event.json.ModEventInjectionTransformer
- Transformer: org.spongepowered.asm.mixin.transformer.Proxy
- Transformer: net.minecraftforge.fml.common.asm.transformers.ModAPITransformer
JVM Flags: 3 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xms640m -Xmx7497m
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP 9.42 Powered by Forge 14.23.1.2600 7 mods loaded, 7 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored

| State | ID         | Version      | Source                                  | Signature                                |
|:----- |:---------- |:------------ |:--------------------------------------- |:---------------------------------------- |
| UC    | minecraft  | 1.12.2       | minecraft.jar                           | None                                     |
| UC    | mcp        | 9.42         | minecraft.jar                           | None                                     |
| UC    | FML        | 8.0.99.99    | forge-1.12.2-14.23.1.2600-universal.jar | e3c3d50c7c986df74c645c0ac54639741c90a557 |
| UC    | forge      | 14.23.1.2600 | forge-1.12.2-14.23.1.2600-universal.jar | e3c3d50c7c986df74c645c0ac54639741c90a557 |
| UC    | quark      | r1.4-122     | Quark-r1.4-122.jar                      | None                                     |
| UC    | autoreglib | 1.3-17       | AutoRegLib-1.3-17.jar                   | None                                     |
| UE    | props      | 2.6.0        | Decocraft-2.6.0_1.12.2.jar              | None                                     |

Loaded coremods (and transformers): 

LoadingPlugin (Quark-r1.4-122.jar)
vazkii.quark.base.asm.ClassTransformer
GL info: ' Vendor: 'NVIDIA Corporation' Version: '4.6.0 NVIDIA 397.31' Renderer: 'GeForce GPU/PCIe/SSE2'

I don't see how this is an issue with quark, this error looks like the mod Decocraft is looking for a interface from the mode CraftStudio api.

@palaster I think (s)he reported it here because of:

WARNING: coremods are present:
LoadingPlugin (Quark-r1.4-122.jar)
Contact their authors BEFORE contacting forge

Other then that... @Zombeanie

net.minecraftforge.fml.common.LoaderExceptionModCrash: Caught exception from Decocraft (props)
Caused by: java.lang.NoClassDefFoundError: com/mia/craftstudio/IPackReaderCallback

Acroding to THIS DecoCraft requires PTRLib as a dependancy which is not in your loaded mod list. Please try again and report the issue to DecoCraft if the issue persists.

Also for future reference, please put the crash report on Gist or Pastebin and then link them here.