crash after changing settings

System.InvalidOperationException: Collection was modified; enumeration operation may not execute.
   at System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource resource)
   at System.Collections.Generic.List`1.ForEach(Action`1 action)
   at osu.Graphics.UserInterface.pScrollableArea.SetScrollPosition(Vector2 scrollPosition, Single clamp)
   at osu.Graphics.UserInterface.pScrollableArea.Update()
   at osu.GameModes.Options.Options.Update()
   at osu.GameBase.Update()
   at osu.Framework.Game.onHostIdle(Object sender, EventArgs e)
   at osu.Framework.GameHost.OnIdle(Object sender, EventArgs args)
   at osu.Framework.WindowsGameHost.onacApplicationIdle(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 osu.Framework.WindowsGameHost.Run()
   at osu.Framework.Game.Run()
   at osu.OsuMain.runGame(String fileArgs, Boolean isTournamentManager, Boolean isDrawings)