casting

---- Minecraft Crash Report ----
// Hi. I'm Minecraft, and I'm a crashaholic.

Time: 10/2/16 10:55 PM
Description: Ticking memory connection

java.lang.NullPointerException: Ticking memory connection
	at com.EvilNotch.silkspawners.HarvestLevelEvent.yourPlayerHarvestEvent(HarvestLevelEvent.java:200)
	at cpw.mods.fml.common.eventhandler.ASMEventHandler_16_HarvestLevelEvent_yourPlayerHarvestEvent_HarvestDropsEvent.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 net.minecraftforge.event.ForgeEventFactory.fireBlockHarvesting(ForgeEventFactory.java:155)
	at net.minecraft.block.Block.dropBlockAsItemWithChance(Block.java:806)
	at net.minecraft.block.BlockRedstoneOre.dropBlockAsItemWithChance(BlockRedstoneOre.java:115)
	at net.minecraft.block.Block.dropBlockAsItem(Block.java:795)
	at net.minecraft.block.Block.harvestBlock(Block.java:1217)
	at net.minecraft.server.management.ItemInWorldManager.tryHarvestBlock(ItemInWorldManager.java:325)
	at net.minecraft.server.management.ItemInWorldManager.uncheckedTryHarvestBlock(ItemInWorldManager.java:234)
	at net.minecraft.network.NetHandlerPlayServer.processPlayerDigging(NetHandlerPlayServer.java:532)
	at net.minecraft.network.play.client.C07PacketPlayerDigging.processPacket(C07PacketPlayerDigging.java:61)
	at net.minecraft.network.play.client.C07PacketPlayerDigging.processPacket(C07PacketPlayerDigging.java:94)
	at net.minecraft.network.NetworkManager.processReceivedPackets(NetworkManager.java:241)
	at net.minecraft.network.NetworkSystem.networkTick(NetworkSystem.java:182)
	at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:726)
	at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:614)
	at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:118)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:485)
	at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:752)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Stacktrace:
	at com.EvilNotch.silkspawners.HarvestLevelEvent.yourPlayerHarvestEvent(HarvestLevelEvent.java:200)
	at cpw.mods.fml.common.eventhandler.ASMEventHandler_16_HarvestLevelEvent_yourPlayerHarvestEvent_HarvestDropsEvent.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 net.minecraftforge.event.ForgeEventFactory.fireBlockHarvesting(ForgeEventFactory.java:155)
	at net.minecraft.block.Block.dropBlockAsItemWithChance(Block.java:806)
	at net.minecraft.block.BlockRedstoneOre.dropBlockAsItemWithChance(BlockRedstoneOre.java:115)
	at net.minecraft.block.Block.dropBlockAsItem(Block.java:795)
	at net.minecraft.block.Block.harvestBlock(Block.java:1217)
	at net.minecraft.server.management.ItemInWorldManager.tryHarvestBlock(ItemInWorldManager.java:325)
	at net.minecraft.server.management.ItemInWorldManager.uncheckedTryHarvestBlock(ItemInWorldManager.java:234)
	at net.minecraft.network.NetHandlerPlayServer.processPlayerDigging(NetHandlerPlayServer.java:532)
	at net.minecraft.network.play.client.C07PacketPlayerDigging.processPacket(C07PacketPlayerDigging.java:61)
	at net.minecraft.network.play.client.C07PacketPlayerDigging.processPacket(C07PacketPlayerDigging.java:94)
	at net.minecraft.network.NetworkManager.processReceivedPackets(NetworkManager.java:241)

-- Ticking connection --
Details:
	Connection: net.minecraft.network.NetworkManager@113ed398
Stacktrace:
	at net.minecraft.network.NetworkSystem.networkTick(NetworkSystem.java:182)
	at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:726)
	at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:614)
	at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:118)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:485)
	at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:752)

-- System Details --
Details:
	Minecraft Version: 1.7.10
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 1.8.0_102, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 701566264 bytes (669 MB) / 1038876672 bytes (990 MB) up to 1038876672 bytes (990 MB)
	JVM Flags: 3 total; -Xincgc -Xmx1024M -Xms1024M
	AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	IntCache: cache: 13, tcache: 0, allocated: 13, tallocated: 95
	FML: MCP v9.05 FML v7.10.99.99 Minecraft Forge 10.13.4.1558 4 mods loaded, 4 mods active
	States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
	UCHIJAAAA	mcp{9.05} [Minecraft Coder Pack] (minecraft.jar)
	UCHIJAAAA	FML{7.10.99.99} [Forge Mod Loader] (forgeSrc-1.7.10-10.13.4.1558-1.7.10.jar)
	UCHIJAAAA	Forge{10.13.4.1558} [Minecraft Forge] (forgeSrc-1.7.10-10.13.4.1558-1.7.10.jar)
	UCHIJAAAA	silkspawners{1.5.2} [Silk Spawners] (bin)
	GL info: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread.
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	Player Count: 1 / 8; [EntityPlayerMP['Player486'/171, l='T', x=135.26, y=69.00, z=233.73]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Definitely; Client brand changed to 'fml,forge'