Automagy 1.8.9 Alpha crash

Description: Rendering screen

java.lang.IllegalArgumentException: Cannot get property PropertyEnum{name=type, clazz=class tuhljin.automagy.common.blocks.BlockBookshelfEnchanted$BookshelfVariants, values=[greatwood, silverwood]} as it does not exist in BlockState{block=minecraft:air, properties=[]}
	at net.minecraft.block.state.BlockState$StateImplementation.func_177229_b(BlockState.java:137)
	at tuhljin.automagy.common.blocks.BlockBookshelfEnchanted.getEnchantPowerBonus(BlockBookshelfEnchanted.java:53)
	at net.darkhax.wawla.addons.generic.AddonGenericTooltips.onTooltip(AddonGenericTooltips.java:65)
	at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_320_AddonGenericTooltips_onTooltip_ItemTooltipEvent.invoke(.dynamic)
	at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:49)
	at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:140)
	at net.minecraftforge.event.ForgeEventFactory.onItemTooltip(ForgeEventFactory.java:195)
	at net.minecraft.item.ItemStack.func_82840_a(ItemStack.java:751)
	at net.minecraft.client.gui.GuiScreen.func_146285_a(GuiScreen.java:132)
	at net.minecraft.client.gui.inventory.GuiContainerCreative.func_146285_a(GuiContainerCreative.java:675)
	at net.minecraft.client.gui.inventory.GuiContainer.func_73863_a(GuiContainer.java:165)
	at net.minecraft.client.renderer.InventoryEffectRenderer.func_73863_a(InventoryEffectRenderer.java:49)
	at net.minecraft.client.gui.inventory.GuiContainerCreative.func_73863_a(GuiContainerCreative.java:586)
	at net.minecraftforge.client.ForgeHooksClient.drawScreen(ForgeHooksClient.java:305)
	at net.minecraft.client.renderer.EntityRenderer.func_181560_a(EntityRenderer.java:1104)
	at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1051)
	at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:349)
	at net.minecraft.client.main.Main.main(SourceFile:124)
	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)