Crash uSkyBlock

Could not pass event InventoryClickEvent to uSkyBlock v2.5.3
org.bukkit.event.EventException
        at us.Myles.PWP.TransparentListeners.PerWorldPluginLoader$1.execute(PerW
orldPluginLoader.java:122) ~[?:?]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.jav
a:62) ~[spigot_server.jar:git-Spigot-db6de12-18fbb24]
        at us.Myles.PWP.TransparentListeners.PWPRegisteredListener.callEvent(PWP
RegisteredListener.java:30) [PerWorldPlugins.jar:?]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.j
ava:502) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.j
ava:487) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java
:1630) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.PacketPlayInWindowClick.a(SourceFile:31)
 [spigot_server.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.PacketPlayInWindowClick.a(SourceFile:9)
[spigot_server.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:1
3) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [
?:1.8.0_51]
        at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_51]
        at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) [spigot_ser
ver.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:7
15) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:3
74) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:6
54) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java
:557) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_51]
Caused by: java.lang.ArrayIndexOutOfBoundsException: 45
        at org.bukkit.craftbukkit.v1_8_R3.inventory.CraftInventoryCustom$Minecra
ftInventory.getItem(CraftInventoryCustom.java:72) ~[spigot_server.jar:git-Spigot
-db6de12-18fbb24]
        at org.bukkit.craftbukkit.v1_8_R3.inventory.CraftInventory.getItem(Craft
Inventory.java:47) ~[spigot_server.jar:git-Spigot-db6de12-18fbb24]
        at us.talabrek.ultimateskyblock.menu.IntegerEditMenu.onClick(IntegerEdit
Menu.java:40) ~[?:?]
        at us.talabrek.ultimateskyblock.menu.ConfigMenu.onClick(ConfigMenu.java:
43) ~[?:?]
        at us.talabrek.ultimateskyblock.event.MenuEvents.guiClick(MenuEvents.jav
a:25) ~[?:?]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0
_51]
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0
_51]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1
.8.0_51]
        at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_51]
        at us.Myles.PWP.TransparentListeners.PerWorldPluginLoader$1.execute(PerW
orldPluginLoader.java:120) ~[?:?]
        ... 16 more