Strange error after changing cursor icons

ThisIsSparta

So Chris, I changed the cursors icons and I'm having this error now on the compiler.

ArgumentOutOfRangeException: Argument is out of range.
Parameter name: index
System.Collections.Generic.List`1[AC.ActionListAsset].RemoveAt (Int32 index) (at /Users/builduser/buildslave/mono-runtime-and-classlibs/build/mcs/class/corlib/System.Collections.Generic/List.cs:538)
AC.CursorManager.IconsGUI () (at Assets/AdventureCreator/Scripts/Managers/CursorManager.cs:193)
AC.CursorManager.ShowGUI () (at Assets/AdventureCreator/Scripts/Managers/CursorManager.cs:136)
AdventureCreator.OnGUI () (at Assets/AdventureCreator/Scripts/Managers/Editor/AdventureCreator.cs:233)
System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at /Users/builduser/buildslave/mono-runtime-and-classlibs/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:222)

I really don't know what that means...can u help me? of course u can

ChrisIceBox

What exactly did you change?

ThisIsSparta

I just added an icon to the icons list...all now runs fine btw....If something happens again I'll let u know...