I have a problem with chisels and bits mod.

Hello. I have a problem with chisels and bits mod. I play 1.12.2 with mod version 14.33 and when i break a Chiseled Block my game just crashes. This is a crash report:

Description: Unexpected error

java.lang.NullPointerException: Unexpected error
    at mod.chiselsandbits.client.CreativeClipboardTab.addItem(CreativeClipboardTab.java:58)
    at mod.chiselsandbits.chiseledblock.BlockChiseled.removedByPlayer(BlockChiseled.java:153)
    at net.minecraft.client.multiplayer.PlayerControllerMP.func_187103_a(PlayerControllerMP.java:176)
    at net.minecraft.client.multiplayer.PlayerControllerMP.func_178891_a(PlayerControllerMP.java:74)
    at net.minecraft.client.multiplayer.PlayerControllerMP.func_180511_b(PlayerControllerMP.java:223)
    at net.optifine.override.PlayerControllerOF.func_180511_b(PlayerControllerOF.java:49)
    at net.minecraft.client.Minecraft.func_147116_af(Minecraft.java:1518)
    at net.minecraft.client.Minecraft.func_184117_aA(Minecraft.java:2249)
    at net.minecraft.client.Minecraft.func_184118_az(Minecraft.java:2020)
    at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1808)
    at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1098)
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:398)
    at net.minecraft.client.main.Main.main(SourceFile:123)
    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)