Issue description:
When I place a realized dimension tab into the dimension builder, i get disconnected from the server with the error: "Fatal error has occured, this connection is terminated".

Steps to reproduce:
Make any realized dimension tab (i have tested about 6 different ones) and put them into a dimension builder

Versions:
Im using the Direwolf20 pack for Minecraft 1.12.1

Mods:
I am only using the ones from the modpack, but i have disabled "Pneumatic craft" and "Chicken Chunks"

The server log:
logged in with entity id 21 at (-68.79676116567869, 51.0, 1162.6544322444418)
[18:13:07] [Server thread/INFO] [mcjty.lib.varia.Logging]: SMP: Sync dimensions to client
[18:13:07] [Server thread/INFO] [net.minecraft.server.dedicated.DedicatedServer]: Legend joined the game
[18:13:07] [Server thread/INFO] [journeymap]: Legend joining dimension 0
[18:13:07] [Server thread/INFO] [buildinggadgets]: Sending SyncedConfig to freshly logged in player litejk500.
[18:13:07] [Server thread/INFO] [EnderCore]: Sending server configs to client for com.enderio.core.common.config.ConfigHandler
[18:13:07] [Server thread/INFO] [FML]: Loading dimension 144 (world) (net.minecraft.server.dedicated.DedicatedServer@11e2d67a)
[18:13:07] [Server thread/INFO] [THAUMCRAFT]: Creating aura cache for world 144
[18:13:07] [Server thread/INFO] [compactmachines3]: Loading saved data for machine world
[18:13:07] [Server thread/INFO] [compactmachines3]: > 0 spawn points
[18:13:07] [Server thread/INFO] [compactmachines3]: > Next machine id: 0
[18:13:07] [Server thread/INFO] [compactmachines3]: > Players with beds in CM dimension: 0
[18:13:07] [Server thread/INFO] [mcjty.lib.varia.Logging]: SMP: Player logged in: Sync diminfo to clients
[18:13:07] [Server thread/INFO] [mcjty.lib.varia.Logging]: Send dimlet rules to the client
[18:13:07] [Server thread/INFO] [mcjty.lib.varia.Logging]: Rules packet size: 5779 of 8192
[18:13:07] [Server thread/INFO] [Actually Additions]: Sending Player Data to player litejk500 with UUID 5e7e6aa6-3113-4997-a76f-2cdbdcdd9e90.
[18:13:07] [Server thread/INFO] [journeymap]: Sending log in packet.
[18:13:07] [ForkJoinPool-1-worker-11/INFO] [opencomputers]: Starting OpenComputers version check.
[18:13:07] [Server thread/INFO] [Astral Sorcery]: [Astral Sorcery] Waiting for server synchronization on login for litejk500...
[18:13:08] [Server thread/INFO] [Astral Sorcery]: [Astral Sorcery] Synchronizing baseline information to litejk500
[18:13:09] [Thread-56/INFO] [THAUMCRAFT]: Starting aura thread for dim 144
[18:13:09] [Server thread/INFO] [THAUMCRAFT]: Removing aura cache for world 144
[18:13:09] [Server thread/INFO] [FML]: Unloading dimension 144
[18:13:11] [Thread-56/INFO] [THAUMCRAFT]: Stopping aura thread for dim 144
[18:13:11] [ForkJoinPool-1-worker-11/INFO] [opencomputers]: Running the latest OpenComputers version.
[18:13:58] [Server thread/INFO] [net.minecraft.network.NetHandlerPlayServer]: litejk500 lost connection: Disconnected

how can I fix this?

Sorry I no longer work on the 1.12 version but it appears to be crashing in The One Probe there

Gamelog.txt
This is the log from my direwolf20 files