[13:57:01] [Server thread/FATAL]: Error executing task
java.util.concurrent.ExecutionException: java.lang.NoClassDefFoundError: Could not initialize class crazypants.enderio.machines.machine.tank.ContainerTank
        at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_144]
        at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_144]
        at net.minecraft.util.Util.func_181617_a(SourceFile:47) [h.class:?]
        at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:721) [MinecraftServer.class:?]
        at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:396) [nz.class:?]
        at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:666) [MinecraftServer.class:?]
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:524) [MinecraftServer.class:?]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_144]
Caused by: java.lang.NoClassDefFoundError: Could not initialize class crazypants.enderio.machines.machine.tank.ContainerTank
        at crazypants.enderio.machines.machine.tank.BlockTank.getServerGuiElement(BlockTank.java:112) ~[BlockTank.class:?]
        at crazypants.enderio.machines.machine.tank.BlockTank.getServerGuiElement(BlockTank.java:50) ~[BlockTank.class:?]
        at crazypants.enderio.base.machine.base.block.AbstractMachineBlock.getServerGuiElement(AbstractMachineBlock.java:252) ~[AbstractMachineBlock.class:?]
        at crazypants.enderio.base.gui.handler.IEioGuiHandler$WithPos.getGuiElement(IEioGuiHandler.java:27) ~[IEioGuiHandler$WithPos.class:?]
        at crazypants.enderio.base.gui.handler.GuiHandler.getGuiElement(GuiHandler.java:49) ~[GuiHandler.class:?]
        at crazypants.enderio.base.gui.handler.GuiHandler.getServerGuiElement(GuiHandler.java:19) ~[GuiHandler.class:?]
        at net.minecraftforge.fml.common.network.NetworkRegistry.getRemoteGuiContainer(NetworkRegistry.java:256) ~[NetworkRegistry.class:?]
        at net.minecraftforge.fml.common.network.internal.FMLNetworkHandler.openGui(FMLNetworkHandler.java:87) ~[FMLNetworkHandler.class:?]
        at net.minecraft.entity.player.EntityPlayer.openGui(EntityPlayer.java:2550) ~[aed.class:?]
        at crazypants.enderio.base.gui.handler.GuiHelper.openGui(GuiHelper.java:99) ~[GuiHelper.class:?]
        at crazypants.enderio.base.gui.handler.GuiHelper.openGui(GuiHelper.java:44) ~[GuiHelper.class:?]
        at crazypants.enderio.base.init.IModObject$Registerable.openGui(IModObject.java:80) ~[IModObject$Registerable.class:?]
        at crazypants.enderio.base.BlockEio.openGui(BlockEio.java:126) ~[BlockEio.class:?]
        at crazypants.enderio.base.BlockEio.openGui(BlockEio.java:118) ~[BlockEio.class:?]
        at com.enderio.core.common.BlockEnder.func_180639_a(BlockEnder.java:90) ~[BlockEnder.class:?]
        at crazypants.enderio.base.BlockEio.func_180639_a(BlockEio.java:98) ~[BlockEio.class:?]
        at crazypants.enderio.base.machine.baselegacy.AbstractInventoryMachineBlock.func_180639_a(AbstractInventoryMachineBlock.java:52) ~[AbstractInventoryMachineBlock.class:?]
        at net.minecraft.server.management.PlayerInteractionManager.func_187251_a(PlayerInteractionManager.java:446) ~[or.class:?]
        at net.minecraft.network.NetHandlerPlayServer.func_184337_a(NetHandlerPlayServer.java:739) ~[pa.class:?]
        at net.minecraft.network.play.client.CPacketPlayerTryUseItemOnBlock.func_148833_a(SourceFile:55) ~[ma.class:?]
        at net.minecraft.network.play.client.CPacketPlayerTryUseItemOnBlock.func_148833_a(SourceFile:11) ~[ma.class:?]
        at net.minecraft.network.PacketThreadUtil$1.run(SourceFile:13) ~[hv$1.class:?]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_144]
        at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_144]
        at net.minecraft.util.Util.func_181617_a(SourceFile:46) ~[h.class:?]
        ... 5 more
>