OpenFM Tinker's Construct problem

---- Minecraft Crash Report ----
// Shall we play a game?

Time: 10/26/15 8:09 PM
Description: Unexpected error

java.lang.NullPointerException: Unexpected error
	at pcl.OpenFM.misc.OFMBreakEvent.IsOp(OFMBreakEvent.java:19)
	at pcl.OpenFM.misc.OFMBreakEvent.onBlockBreak(OFMBreakEvent.java:24)
	at cpw.mods.fml.common.eventhandler.ASMEventHandler_977_OFMBreakEvent_onBlockBreak_BreakEvent.invoke(.dynamic)
	at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:54)
	at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:138)
	at tconstruct.items.tools.LumberAxe.breakTree(LumberAxe.java:173)
	at tconstruct.items.tools.LumberAxe.onBlockStartBreak(LumberAxe.java:101)
	at net.minecraft.client.multiplayer.PlayerControllerMP.func_78751_a(PlayerControllerMP.java:96)
	at net.minecraft.client.multiplayer.PlayerControllerMP.func_78759_c(PlayerControllerMP.java:247)
	at net.minecraft.client.Minecraft.func_147115_a(Minecraft.java:1357)
	at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1967)
	at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:973)
	at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:898)
	at net.minecraft.client.main.Main.main(SourceFile:148)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28)


A detailed walkthrough of the error, its code path and all known details is as follows:
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-- Head --
Stacktrace:
	at pcl.OpenFM.misc.OFMBreakEvent.IsOp(OFMBreakEvent.java:19)
	at pcl.OpenFM.misc.OFMBreakEvent.onBlockBreak(OFMBreakEvent.java:24)
	at cpw.mods.fml.common.eventhandler.ASMEventHandler_977_OFMBreakEvent_onBlockBreak_BreakEvent.invoke(.dynamic)
	at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:54)
	at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:138)
	at tconstruct.items.tools.LumberAxe.breakTree(LumberAxe.java:173)
	at tconstruct.items.tools.LumberAxe.onBlockStartBreak(LumberAxe.java:101)
	at net.minecraft.client.multiplayer.PlayerControllerMP.func_78751_a(PlayerControllerMP.java:96)
	at net.minecraft.client.multiplayer.PlayerControllerMP.func_78759_c(PlayerControllerMP.java:247)
	at net.minecraft.client.Minecraft.func_147115_a(Minecraft.java:1357)