net.minecraft.util.ReportedException: Exception while updating neighbours
        at net.minecraft.world.World.func_147460_e(World.java:706) ~[ahb.class:?]
        at net.minecraft.world.World.func_147459_d(World.java:625) ~[ahb.class:?]
        at net.minecraft.world.World.func_147444_c(World.java:589) ~[ahb.class:?]
        at net.minecraft.world.World.func_147465_d(World.java:455) ~[ahb.class:?]
        at net.minecraft.world.World.func_147468_f(World.java:549) ~[ahb.class:?]
        at net.minecraft.block.Block.removedByPlayer(Block.java:1341) ~[aji.class:?]
        at net.minecraft.block.Block.removedByPlayer(Block.java:1335) ~[aji.class:?]
        at tconstruct.library.tools.HarvestTool.mineBlock(HarvestTool.java:314) ~[HarvestTool.class:?]
        at tconstruct.items.tools.Hammer.onBlockStartBreak(Hammer.java:321) ~[Hammer.class:?]
        at net.minecraft.server.management.ItemInWorldManager.func_73084_b(ItemInWorldManager.java:267) ~[mx.class:?]
        at net.minecraft.server.management.ItemInWorldManager.func_73082_a(ItemInWorldManager.java:217) ~[mx.class:?]
        at net.minecraft.network.NetHandlerPlayServer.func_147345_a(NetHandlerPlayServer.java:498) ~[nh.class:?]
        at net.minecraft.network.play.client.C07PacketPlayerDigging.func_148833_a(SourceFile:53) ~[ji.class:?]
        at net.minecraft.network.play.client.C07PacketPlayerDigging.func_148833_a(SourceFile:8) ~[ji.class:?]
        at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212) ~[ej.class:?]
        at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:165) [nc.class:?]
        at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:659) [MinecraftServer.class:?]
        at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:334) [lt.class:?]
        at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:547) [MinecraftServer.class:?]
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427) [MinecraftServer.class:?]
        at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685) [li.class:?]
Caused by: java.lang.NullPointerException
        at net.doubledoordev.placeableTools.block.ToolTE.onNeighborBlockChange(ToolTE.java:198) ~[ToolTE.class:?]
        at net.doubledoordev.placeableTools.block.ToolBlock.func_149695_a(ToolBlock.java:125) ~[ToolBlock.class:?]
        at net.minecraft.world.World.func_147460_e(World.java:673) ~[ahb.class:?]
        ... 20 more