Right Clicked Vanity Slot 1 and an exception happened

[cheeeeeeeeeen]

System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at Terraria.ModLoader.GlobalItem.Instance(Item item)
   at Terraria.Item.GetGlobalItem[T]()
   at Loot.ModifierItem.CanEquipAccessory(Item item, Player player, Int32 slot)
   at Terraria.ModLoader.ItemLoader.CanEquipAccessory(Item item, Int32 slot)
   at Terraria.UI.ItemSlot.RightClick(Item[] inv, Int32 context, Int32 slot)
   at Terraria.Main.DrawInventory()
   at Terraria.Main.DrawInterface_27_Inventory()
   at Terraria.Main.<SetupDrawInterfaceLayers>b__1632_23()
   at Terraria.UI.LegacyGameInterfaceLayer.DrawSelf()
   at Terraria.UI.GameInterfaceLayer.Draw()
   at Terraria.Main.DrawInterface(GameTime gameTime)
   at Terraria.Main.DoDraw(GameTime gameTime)
   at Terraria.Main.Draw(GameTime gameTime)
   at Microsoft.Xna.Framework.Game.DrawFrame()
   at Microsoft.Xna.Framework.Game.Tick()
   at Microsoft.Xna.Framework.Game.HostIdle(Object sender, EventArgs e)
   at Microsoft.Xna.Framework.GameHost.OnIdle()
   at Microsoft.Xna.Framework.WindowsGameHost.RunOneFrame()
   at Microsoft.Xna.Framework.WindowsGameHost.ApplicationIdle(Object sender, EventArgs e)
   at System.Windows.Forms.Application.ThreadContext.System.Windows.Forms.UnsafeNativeMethods.IMsoComponent.FDoIdle(Int32 grfidlef)
   at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.Run(Form mainForm)
   at Microsoft.Xna.Framework.WindowsGameHost.Run()
   at Microsoft.Xna.Framework.Game.RunGame(Boolean useBlockingRun)
   at Terraria.Program.LaunchGame_()
   at Terraria.Program.LaunchGame(String[] args, Boolean monoArgs)
   at Terraria.WindowsLaunch.Main(String[] args)

This happened when there is no Item in Vanity Slot 1, but there is an equipped accessory on the right side slot..

If it helps, I happen to do this with the Portable Cement Mixer without extra modifiers.
This also happens with Architect Gizmo Pack.