Minecraft forge server 1.11.2. keeps crashing pls help!

[NotRedFox]

So... Im trying to launch my forge server (forge-1.11.2-13.20.1.2386) and it works fine really, but when I try to add these mods - Ad Inferos V1.2.6  and Think Big Core V1.6.1 (required for Ad Inferos to work), server keeps crashing! Plz help!
 

⬇️Here is my crash-report⬇️:

 

Description: Exception in server tick loop

net.minecraftforge.fml.common.LoaderExceptionModCrash: Caught exception from §e§k!!§6§k]]§c§kkk§4§lAd Inferos§c§kkk§6§k]]§e§k!! (adinferos)
Caused by: java.lang.NoSuchFieldError: shownTip
    at com.superdextor.adinferos.blocks.BlockHellDoor.<init>(BlockHellDoor.java:23)
    at com.superdextor.adinferos.init.NetherBlocks.<clinit>(NetherBlocks.java:73)
    at com.superdextor.adinferos.AdInferosCore.preInit(AdInferosCore.java:70)
    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.minecraftforge.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:647)
    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.sendEventToModContainer(LoadController.java:253)
    at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:231)
    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:148)
    at net.minecraftforge.fml.common.Loader.preinitializeMods(Loader.java:647)
    at net.minecraftforge.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:100)
    at net.minecraftforge.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:332)
    at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:121)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:442)
    at java.lang.Thread.run(Unknown Source)

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

-- System Details --
Details:
    Minecraft Version: 1.11.2
    Operating System: Windows 10 (amd64) version 10.0
    Java Version: 1.8.0_152, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 4116876072 bytes (3926 MB) / 4277534720 bytes (4079 MB) up to 4277534720 bytes (4079 MB)
    JVM Flags: 7 total; -Xmx4G -Xms4G -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:+CMSIncrementalPacing -XX:ParallelGCThreads=2 -XX:+AggressiveOpts
    IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
    FML: MCP 9.38 Powered by Forge 13.20.1.2386 6 mods loaded, 6 mods active
    States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
    UCH    minecraft{1.11.2} [Minecraft] (minecraft.jar) 
    UCH    mcp{9.19} [Minecraft Coder Pack] (minecraft.jar) 
    UCH    FML{8.0.99.99} [Forge Mod Loader] (forge-1.11.2-13.20.1.2386-universal.jar) 
    UCH    forge{13.20.1.2386} [Minecraft Forge] (forge-1.11.2-13.20.1.2386-universal.jar) 
    UCH    thinkbigcore{1.6.1} [§5§m===§r §e§lThink Big Core §5§m===§r] (Think Big Core V1.6.1 - 1.11.2.jar) 
    UCE    adinferos{1.2.6} [§e§k!!§6§k]]§c§kkk§4§lAd Inferos§c§kkk§6§k]]§e§k!!] (Ad Inferos V1.2.6 - 1.11.2.jar) 
    Loaded coremods (and transformers): 
    Profiler Position: N/A (disabled)
    Is Modded: Definitely; Server brand changed to 'fml,forge'
    Type: Dedicated Server (map_server.txt)

 

Seriosly, I dont know what to do anymore... Im trying to solve this problem for a hour or two plz help!

 

[dragonwhisper92]

do the mods work in single player?

 

[larsgerrits]

This is an issue with Ad Inferos, make sure you're using the latest version and report it to the author.