java.lang.NullPointerException: This exception has no message.

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Cross-mod NPE in PlayerArmour crafting handler

This exception has no message.

java.lang.NullPointerException: 	at chbachman.armour.handler.PlayerArmour.getFor(PlayerArmour.java:88)	at chbachman.armour.handler.GenericEventHandler.onCraft(GenericEventHandler.java:56)	at cpw.mods.fml.common.eventhandler.ASMEventHandler_772_GenericEventHandler_onCraft_ItemCraftedEvent.invoke(.dynamic)	at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:54)	at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:140)	at cpw.mods.fml.common.FMLCommonHandler.firePlayerCraftingEvent(FMLCommonHandler.java:570)	at com.ewyboy.ewysworkshop.page.unit.UnitCrafting.onCrafted(UnitCrafting.java:110)	at com.ewyboy.ewysworkshop.page.unit.UnitCrafting.onCrafting(UnitCrafting.java:92)	at com.ewyboy.ewysworkshop.page.unit.UnitCrafting.onProduction(UnitCrafting.java:523)	at com.ewyboy.ewysworkshop.page.unit.Unit.produce(Unit.java:154)	at com.ewyboy.ewysworkshop.page.unit.Unit.onUpdate(Unit.java:184)	at com.ewyboy.ewysworkshop.page.unit.UnitCrafting.onUpdate(UnitCrafting.java:263)	at com.ewyboy.ewysworkshop.page.PageMain.onUpdate(PageMain.java:51)	at com.ewyboy.ewysworkshop.tileentity.TileEntityTable.func_145845_h(TileEntityTable.java:334)	at net.minecraft.world.World.func_72939_s(World.java:1939)	at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:489)	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:636)	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:334)	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:547)	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427)	at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)