Weird Error

2013-03-31 21:11:58 [SEVERE] [ForgeModLoader] Could not find $VALUES field for enum: net.minecraft.item.EnumToolMaterial
2013-03-31 21:11:58 [SEVERE] [ForgeModLoader] Runtime Deobf: false
2013-03-31 21:11:58 [SEVERE] [ForgeModLoader] Fields:
2013-03-31 21:11:58 [SEVERE] [ForgeModLoader]     WOOD: net.minecraft.item.EnumToolMaterial
2013-03-31 21:11:58 [SEVERE] [ForgeModLoader]     STONE: net.minecraft.item.EnumToolMaterial
2013-03-31 21:11:58 [SEVERE] [ForgeModLoader]     IRON: net.minecraft.item.EnumToolMaterial
2013-03-31 21:11:58 [SEVERE] [ForgeModLoader]     EMERALD: net.minecraft.item.EnumToolMaterial
2013-03-31 21:11:58 [SEVERE] [ForgeModLoader]     GOLD: net.minecraft.item.EnumToolMaterial
2013-03-31 21:11:58 [SEVERE] [ForgeModLoader]     harvestLevel: int
2013-03-31 21:11:58 [SEVERE] [ForgeModLoader]     maxUses: int
2013-03-31 21:11:58 [SEVERE] [ForgeModLoader]     efficiencyOnProperMaterial: float
2013-03-31 21:11:58 [SEVERE] [ForgeModLoader]     damageVsEntity: int
2013-03-31 21:11:58 [SEVERE] [ForgeModLoader]     enchantability: int
2013-03-31 21:11:58 [SEVERE] [ForgeModLoader]     customCraftingMaterial: net.minecraft.item.Item
2013-03-31 21:11:58 [SEVERE] [ForgeModLoader]     $SWITCH_TABLE$net$minecraft$item$EnumToolMaterial: [I
2013-03-31 21:11:58 [SEVERE] [ForgeModLoader]     ENUM$VALUES: [Lnet.minecraft.item.EnumToolMaterial;
2013-03-31 21:11:58 [SEVERE] [ForgeModLoader] Could not find $VALUES field for enum: net.minecraft.item.EnumArmorMaterial
2013-03-31 21:11:58 [SEVERE] [ForgeModLoader] Runtime Deobf: false
2013-03-31 21:11:58 [SEVERE] [ForgeModLoader] Fields:
2013-03-31 21:11:58 [SEVERE] [ForgeModLoader]     CLOTH: net.minecraft.item.EnumArmorMaterial
2013-03-31 21:11:58 [SEVERE] [ForgeModLoader]     CHAIN: net.minecraft.item.EnumArmorMaterial
2013-03-31 21:11:58 [SEVERE] [ForgeModLoader]     IRON: net.minecraft.item.EnumArmorMaterial
2013-03-31 21:11:58 [SEVERE] [ForgeModLoader]     GOLD: net.minecraft.item.EnumArmorMaterial
2013-03-31 21:11:58 [SEVERE] [ForgeModLoader]     DIAMOND: net.minecraft.item.EnumArmorMaterial
2013-03-31 21:11:58 [SEVERE] [ForgeModLoader]     maxDamageFactor: int
2013-03-31 21:11:58 [SEVERE] [ForgeModLoader]     damageReductionAmountArray: [I
2013-03-31 21:11:58 [SEVERE] [ForgeModLoader]     enchantability: int
2013-03-31 21:11:58 [SEVERE] [ForgeModLoader]     customCraftingMaterial: net.minecraft.item.Item
2013-03-31 21:11:58 [SEVERE] [ForgeModLoader]     $SWITCH_TABLE$net$minecraft$item$EnumArmorMaterial: [I
2013-03-31 21:11:58 [SEVERE] [ForgeModLoader]     ENUM$VALUES: [Lnet.minecraft.item.EnumArmorMaterial;