Random InventoryClickEvent errors

[LigerXT5]

Ive been seeing a lot of random errors, they don't appear very often, but when it does, it happens a number of ti es.

[10:04:06] [Server thread/ERROR]: Could not pass event InventoryClickEvent to Soulbound v1.1.10-SNAPSHOT-b81
org.bukkit.event.EventException
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:294) ~[Spigot.jar:git-Spigot-1526]
    at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[Spigot.jar:git-Spigot-1526]
    at org.bukkit.plugin.TimedRegisteredListener.callEvent(TimedRegisteredListener.java:47) ~[Spigot.jar:git-Spigot-1526]
    at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [Spigot.jar:git-Spigot-1526]
    at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [Spigot.jar:git-Spigot-1526]
    at net.minecraft.server.v1_7_R3.PlayerConnection.a(PlayerConnection.java:1432) [Spigot.jar:git-Spigot-1526]
    at net.minecraft.server.v1_7_R3.PacketPlayInWindowClick.a(SourceFile:32) [Spigot.jar:git-Spigot-1526]
    at net.minecraft.server.v1_7_R3.PacketPlayInWindowClick.handle(SourceFile:10) [Spigot.jar:git-Spigot-1526]
    at net.minecraft.server.v1_7_R3.NetworkManager.a(NetworkManager.java:184) [Spigot.jar:git-Spigot-1526]
    at net.minecraft.server.v1_7_R3.ServerConnection.c(ServerConnection.java:81) [Spigot.jar:git-Spigot-1526]
    at net.minecraft.server.v1_7_R3.MinecraftServer.v(MinecraftServer.java:720) [Spigot.jar:git-Spigot-1526]
    at net.minecraft.server.v1_7_R3.DedicatedServer.v(DedicatedServer.java:283) [Spigot.jar:git-Spigot-1526]
    at net.minecraft.server.v1_7_R3.MinecraftServer.u(MinecraftServer.java:583) [Spigot.jar:git-Spigot-1526]
    at net.minecraft.server.v1_7_R3.MinecraftServer.run(MinecraftServer.java:489) [Spigot.jar:git-Spigot-1526]
    at net.minecraft.server.v1_7_R3.ThreadServerApplication.run(SourceFile:628) [Spigot.jar:git-Spigot-1526]
Caused by: java.lang.IndexOutOfBoundsException: Index: 5, Size: 5
    at java.util.ArrayList.rangeCheck(ArrayList.java:635) ~[?:1.7.0_60]
    at java.util.ArrayList.get(ArrayList.java:411) ~[?:1.7.0_60]
    at com.me.tft_02.soulbound.util.ItemUtils.updateOldLore(ItemUtils.java:244) ~[?:?]
    at com.me.tft_02.soulbound.util.ItemUtils.isBindedPlayer(ItemUtils.java:222) ~[?:?]
    at com.me.tft_02.soulbound.listeners.InventoryListener.onInventoryClickEvent(InventoryListener.java:96) ~[?:?]
    at sun.reflect.GeneratedMethodAccessor518.invoke(Unknown Source) ~[?:?]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.7.0_60]
    at java.lang.reflect.Method.invoke(Method.java:606) ~[?:1.7.0_60]
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:292) ~[Spigot.jar:git-Spigot-1526]
    ... 14 more