Here is a small snip-pit from my MultiMC Log:
[20:20:49] [Server thread/ERROR]: Encountered an unexpected exception
java.lang.NullPointerException
at com.khorn.terraincontrol.forge.TXDimensionManager.RemoveTCDims(TXDimensionManager.java:523) ~[TXDimensionManager.class:?]
at com.khorn.terraincontrol.forge.ForgeWorld.(ForgeWorld.java:155) ~[ForgeWorld.class:?]
at com.khorn.terraincontrol.forge.WorldLoader.getOrCreateForgeWorld(WorldLoader.java:284) ~[WorldLoader.class:?]
at com.khorn.terraincontrol.forge.WorldLoader.getOrCreateForgeWorld(WorldLoader.java:262) ~[WorldLoader.class:?]
at com.khorn.terraincontrol.forge.TXWorldType.getBiomeProvider(TXWorldType.java:67) ~[TXWorldType.class:?]
at net.minecraft.world.WorldProvider.func_76572_b(WorldProvider.java:58) ~[avf.class:?]
at net.minecraft.world.WorldProvider.func_76558_a(WorldProvider.java:40) ~[avf.class:?]
at net.minecraft.world.WorldServer.(WorldServer.java:112) ~[lw.class:?]
at net.minecraft.server.integrated.IntegratedServer.func_71247_a(IntegratedServer.java:85) ~[cch.class:?]
at net.minecraft.server.integrated.IntegratedServer.func_71197_b(IntegratedServer.java:120) ~[cch.class:?]
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:442) [MinecraftServer.class:?]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_131]
[20:20:49] [Server thread/ERROR]: This crash report has been saved to: /home/royal-jelly/Desktop/Games/MultiMC[0.5.1]/instances/Forged with Maids [1.11.2]/minecraft/crash-reports/crash-2017-06-07_20.20.49-server.txt

And the whole log can be found here : https://paste.ee/p/OoHka

This is probably not on you to fix but i thought maybe i should post a report here as well

Yeah this is true, i did compile it and i did just assume it would world across the two versions perhaps i was just being dumb

Sorry for the useless bug report ~

New OTG and BBundle for 1.11.2 is now up on Curse.