int16 vs uint16 issue?

[17:42:12] [main/ERROR] [FML]: Exception caught during firing event net.minecraftforge.oredict.OreDictionary$OreRegisterEvent@7044b26b:
java.lang.ArrayIndexOutOfBoundsException: 32767
at erebus.items.block.ItemBlockEnum.func_77667_c(ItemBlockEnum.java:29) ~[ItemBlockEnum.class:?]
at net.minecraft.item.Item.func_77657_g(Item.java:292) ~[ain.class:?]
at net.minecraft.item.Item.func_77653_i(Item.java:362) ~[ain.class:?]
at net.minecraft.item.ItemStack.func_82833_r(ItemStack.java:617) ~[aip.class:?]
at com.kashdeya.tinyprogressions.main.TinyProgressions.registerOre(TinyProgressions.java:125) ~[TinyProgressions.class:?]
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_3639_TinyProgressions_registerOre_OreRegisterEvent.invoke(.dynamic) ~[?:?]
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90) ~[ASMEventHandler.class:?]
at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:179) [EventBus.class:?]
at net.minecraftforge.oredict.OreDictionary.registerOreImpl(OreDictionary.java:683) [OreDictionary.class:?]
at net.minecraftforge.oredict.OreDictionary.registerOre(OreDictionary.java:628) [OreDictionary.class:?]
at erebus.recipes.RecipeHandler$RegistrationHandler.registerOreDictEntries(RecipeHandler.java:167) [RecipeHandler$RegistrationHandler.class:?]
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_444_RegistrationHandler_registerOreDictEntries_Register.invoke(.dynamic) [?:?]
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90) [ASMEventHandler.class:?]
at net.minecraftforge.fml.common.eventhandler.EventBus$1.invoke(EventBus.java:143) [EventBus$1.class:?]
at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:179) [EventBus.class:?]
at net.minecraftforge.registries.GameData.fireRegistryEvents(GameData.java:739) [GameData.class:?]
at net.minecraftforge.fml.common.Loader.preinitializeMods(Loader.java:604) [Loader.class:?]
at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:270) [FMLClientHandler.class:?]
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:466) [bib.class:?]
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:377) [bib.class:?]
at net.minecraft.client.main.Main.main(SourceFile:123) [Main.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_161]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_161]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_161]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_161]
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.12.jar:?]
at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]