Ae2 crash log

---- Minecraft Crash Report ----
// Hey, that tickles! Hehehe!

Time: 12/30/17 6:55 AM
Description: Exception in server tick loop

java.lang.ClassCastException: net.minecraft.block.BlockAir cannot be cast to appeng.block.crafting.BlockCraftingUnit
	at appeng.tile.crafting.TileCraftingTile.isAccelerator(TileCraftingTile.java:116)
	at appeng.tile.crafting.TileCraftingTile.getItemFromTile(TileCraftingTile.java:84)
	at appeng.tile.crafting.TileCraftingTile.onReady(TileCraftingTile.java:124)
	at appeng.hooks.TickHandler.onTick(TickHandler.java:218)
	at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_25_TickHandler_onTick_TickEvent.invoke(.dynamic)
	at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90)
	at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:179)
	at net.minecraftforge.fml.common.FMLCommonHandler.onPostServerTick(FMLCommonHandler.java:264)
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:710)
	at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:185)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:524)
	at java.lang.Thread.run(Thread.java:748)


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: Linux (amd64) version 4.8.0-59-generic
	Java Version: 1.8.0_131, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 1323586624 bytes (1262 MB) / 2339373056 bytes (2231 MB) up to 5249695744 bytes (5006 MB)
	JVM Flags: 4 total; -XX:-OmitStackTraceInFastThrow -Xms1024M -Xmx5632M -XX:MetaspaceSize=256M
	IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
	FML: MCP 9.42 Powered by Forge 14.23.0.2549 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

	| State     | ID                  | Version      | Source                                  | Signature                                |
	|:--------- |:------------------- |:------------ |:--------------------------------------- |:---------------------------------------- |
	| UCHIJAAAA | minecraft           | 1.12.2       | minecraft.jar                           | None                                     |
	| UCHIJAAAA | mcp                 | 9.42         | minecraft.jar                           | None                                     |
	| UCHIJAAAA | FML                 | 8.0.99.99    | forge-1.12.2-14.23.0.2549-universal.jar | e3c3d50c7c986df74c645c0ac54639741c90a557 |
	| UCHIJAAAA | forge               | 14.23.0.2549 | forge-1.12.2-14.23.0.2549-universal.jar | e3c3d50c7c986df74c645c0ac54639741c90a557 |
	| UCHIJAAAA | appliedenergistics2 | rv5-stable-3 | appliedenergistics2-rv5-stable-3.jar    | None                                     |

	Loaded coremods (and transformers):
	GL info: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread.
	AE2 Version: stable rv5-stable-3 for Forge 14.23.1.2554
	AE2 Integration: IC2:OFF, RC:OFF, MFR:OFF, Waila:OFF, InvTweaks:OFF, JEI:OFF, Mekanism:OFF, OpenComputers:OFF, THE_ONE_PROBE:OFF, TESLA:OFF, CRAFTTWEAKER:OFF
	Profiler Position: N/A (disabled)
	Player Count: 1 / 8; [EntityPlayerMP['zacxen'/648, l='Test', x=-62.76, y=76.00, z=226.12]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Definitely; Client brand changed to 'fml,forge'