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java.lang.IllegalArgumentException: Cannot get property PropertyEnum{name=variant, clazz=class net.minecraft.block.BlockStone$EnumType, values=[stone, gr	at net.minecraft.block.state.BlockState$StateImplementation.func_177229_b(BlockState.java:137)	at net.minecraft.block.BlockStone.func_176201_c(SourceFile:66)	at net.minecraft.block.Block.getHarvestTool(Block.java:2024)	at net.minecraftforge.common.ForgeHooks.canHarvestBlock(ForgeHooks.java:133)	at net.minecraft.block.Block.canHarvestBlock(Block.java:1189)	at net.minecraft.server.management.ItemInWorldManager.func_180237_b(ItemInWorldManager.java:297)	at net.minecraft.server.management.ItemInWorldManager.func_73075_a(ItemInWorldManager.java:104)	at net.minecraft.entity.player.EntityPlayerMP.func_70071_h_(EntityPlayerMP.java:217)	at net.minecraft.world.World.func_72866_a(World.java:1860)	at net.minecraft.world.WorldServer.func_72866_a(WorldServer.java:699)	at net.minecraft.world.World.func_72870_g(World.java:1829)	at net.minecraft.world.World.func_72939_s(World.java:1661)	at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:544)	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:701)	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:344)	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:605)	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:481)	at java.lang.Thread.run(Unknown Source)