Crach on rightclick to BlockRedNetCable

[xedp3x]

Crash every time

mods/MineFactoryReloaded-[1.7.10]2.8.0RC2-557.jar

[21:42:48] [Client thread/FATAL]: Unreported exception thrown!
java.lang.ArrayIndexOutOfBoundsException: -1
    at powercrystals.minefactoryreloaded.block.transport.BlockRedNetCable.activated(BlockRedNetCable.java:152) ~[BlockRedNetCable.class:?]
    at powercrystals.minefactoryreloaded.block.BlockFactory.func_149727_a(BlockFactory.java:97) ~[BlockFactory.class:?]
    at net.minecraft.client.multiplayer.PlayerControllerMP.func_78760_a(PlayerControllerMP.java:326) ~[bje.class:?]
    at net.minecraft.client.Minecraft.func_147121_ag(Minecraft.java:1436) ~[bao.class:?]
    at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1942) ~[bao.class:?]
    at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:962) ~[bao.class:?]
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:887) [bao.class:?]
    at net.minecraft.client.main.Main.main(SourceFile:148) [Main.class:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_65]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[?:1.7.0_65]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.7.0_65]
    at java.lang.reflect.Method.invoke(Method.java:606) ~[?:1.7.0_65]
    at net.minecraft.launchwrapper.Launch.launch(Launch.java:134) [launchwrapper-1.9.jar:?]
    at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.9.jar:?]