tekkit crash

2015-08-27 20:25:57 [INFO] Accepted EditSessionFactory of type net.coreprotect.worldedit.CoreProtectEditSessionFactory from net.coreprotect.worldedit
2015-08-27 20:25:57 [INFO] [Jobs] [Jobs] Successfully linked with Vault.
2015-08-27 20:25:57 [INFO] GroupManager - INFO - Bukkit Permissions Updated!
2015-08-27 20:25:57 [INFO] [Reporter] v2.15.4 - Language: English v7 By KabOOm 356
2015-08-27 20:25:57 [SEVERE] java.lang.NumberFormatException: For input string: ""
2015-08-27 20:25:57 [SEVERE]    at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
2015-08-27 20:25:57 [SEVERE]    at java.lang.Integer.parseInt(Integer.java:504)
2015-08-27 20:25:57 [SEVERE]    at java.lang.Integer.parseInt(Integer.java:527)
2015-08-27 20:25:57 [SEVERE]    at net.coreprotect.thread.CheckUpdate.run(CheckUpdate.java:52)
2015-08-27 20:25:57 [SEVERE]    at java.lang.Thread.run(Thread.java:745)
2015-08-27 20:25:57 [SEVERE] net.minecraft.util.ReportedException: Ticking tile entity
2015-08-27 20:25:58 [SEVERE]    at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:896)
2015-08-27 20:25:58 [SEVERE]    at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:331)
2015-08-27 20:25:58 [SEVERE]    at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:784)
2015-08-27 20:25:58 [SEVERE]    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:666)
2015-08-27 20:25:58 [SEVERE]    at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:583)
2015-08-27 20:25:58 [SEVERE] Caused by: java.lang.NullPointerException
2015-08-27 20:25:58 [SEVERE]    at thermalexpansion.util.Utils.isInventory(Utils.java:157)
2015-08-27 20:25:58 [SEVERE]    at thermalexpansion.block.TileInventory.transferItem(TileInventory.java:33)
2015-08-27 20:25:58 [SEVERE]    at thermalexpansion.block.machine.TilePulverizer.transferProducts(TilePulverizer.java:161)
2015-08-27 20:25:58 [SEVERE]    at thermalexpansion.block.machine.TileMachineEnergized.func_70316_g(TileMachineEnergized.java:118)
2015-08-27 20:25:58 [SEVERE]    at net.minecraft.world.World.func_72939_s(World.java:2751)
2015-08-27 20:25:58 [SEVERE]    at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:890)
2015-08-27 20:25:58 [SEVERE]    ... 4 more
2015-08-27 20:25:58 [SEVERE] Encountered an unexpected exception ReportedException
net.minecraft.util.ReportedException: Ticking tile entity
        at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:896)
        at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:331)
        at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:784)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:666)
        at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:583)
Caused by: java.lang.NullPointerException
        at thermalexpansion.util.Utils.isInventory(Utils.java:157)
        at thermalexpansion.block.TileInventory.transferItem(TileInventory.java:33)
        at thermalexpansion.block.machine.TilePulverizer.transferProducts(TilePulverizer.java:161)
        at thermalexpansion.block.machine.TileMachineEnergized.func_70316_g(TileMachineEnergized.java:118)
        at net.minecraft.world.World.func_72939_s(World.java:2751)
        at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:890)
        ... 4 more
2015-08-27 20:25:58 [SEVERE] This crash report has been saved to: ./crash-reports/crash-2015-08-27_20.25.58-server.txt