Unhandled Client Exception in System.Collections.Generic.List`1.Enumerator.MoveNextRare

[Vilaronga]

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Diagnostic Information

System.InvalidOperationException: Collection was modified; enumeration operation may not execute.
   at System.Collections.Generic.List`1.Enumerator.MoveNextRare()
   at System.Linq.Enumerable.OfTypeIterator[TResult](IEnumerable source)+MoveNext()
   at System.Linq.Enumerable.WhereEnumerableIterator`1.ToList()
   at XNAControls.Input.InputTargetFinder.GetMouseOverEventTargetControl(IEnumerable`1 collection)
   at XNAControls.Input.InputManager.Update(GameTime gameTime)
   at Microsoft.Xna.Framework.Game.SortingFilteringCollection`1.ForEachFilteredItem[TUserData](Action`2 action, TUserData userData)
   at EndlessClient.GameExecution.EndlessGame.Update(GameTime gameTime) in D:\a\1\s\EndlessClient\GameExecution\EndlessGame.cs:line 197