it's a couple of hour that i'm trying to understand what's happened, but, i after added a new system to retroarch all become a mess, doesn't recognize core and after reinstalling everything it works fine for some time losing some system, then i received this error, any help? I don't like the idea to re-setup everything.
 
	Thanks
 
	Index non compreso nell'intervallo. Richiesto valore non negativo e minore della dimensione della raccolta. 
	Parameter name: index
 
	App:     LaunchBox 
	Version: 9.5 
	Type:    System.ArgumentOutOfRangeException 
	Site:    System.Object get_Item(Int32) 
	Source:  mscorlib
 
	   at System.Collections.ArrayList.get_Item(Int32 index) 
	   at System.Windows.Forms.DataGridViewRowCollection.SharedRow(Int32 rowIndex) 
	   at System.Windows.Forms.DataGridViewRowCollection.get_Item(Int32 index) 
	   at (EmulatorForm , Object , DataGridViewCellEventArgs ) 
	   at Unbroken.LaunchBox.Desktop.Forms.EmulatorForm.PlatformsDataGridView_CellContentClick(Object sender, DataGridViewCellEventArgs e) 
	   at System.Windows.Forms.DataGridView.OnCellContentClick(DataGridViewCellEventArgs e) 
	   at System.Windows.Forms.DataGridView.OnCommonCellContentClick(Int32 columnIndex, Int32 rowIndex, Boolean doubleClick) 
	   at System.Windows.Forms.DataGridViewCell.OnMouseUpInternal(DataGridViewCellMouseEventArgs e) 
	   at System.Windows.Forms.DataGridView.OnCellMouseUp(DataGridViewCellMouseEventArgs e) 
	   at System.Windows.Forms.DataGridView.OnMouseUp(MouseEventArgs e) 
	   at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks) 
	   at System.Windows.Forms.Control.WndProc(Message& m) 
	   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
 
	Recent Log:
 
	   02:13:24 Music.Play Empty Music Path 
	   02:13:24 Music.NotifyTrackList Start 
	   02:13:24 Music.NotifyTrackList Invoke WPF 
	   02:13:37 Music.Pause Start 
	   02:13:37 Music.Pause Start 
	   02:13:37 Music.Play Start 
	   02:13:37 Music.Kill Start 
	   02:13:37 Music.Kill Finished 
	   02:13:37 Music.Play Empty Music Path 
	   02:13:37 Music.NotifyTrackList Start 
	   02:13:37 Music.NotifyTrackList Invoke WPF 
	   02:13:38 Music.Pause Start 
	   02:13:38 Music.Pause Start 
	   02:14:25 Music.Pause Start 
	   02:14:25 Music.Pause Start 
	   02:14:26 Music.Pause Start 
	   02:14:26 Music.Pause Start 
	   02:14:27 Music.Play Start 
	   02:14:27 Music.Kill Start 
	   02:14:27 Music.Kill Finished 
	   02:14:27 Music.Play Empty Music Path 
	   02:14:27 Music.NotifyTrackList Start 
	   02:14:27 Music.NotifyTrackList Invoke WPF 
	   02:14:34 Music.Play Start 
	   02:14:34 Music.Kill Start 
	   02:14:34 Music.Kill Finished 
	   02:14:34 Music.Play Empty Music Path 
	   02:14:34 Music.NotifyTrackList Start 
	   02:14:34 Music.NotifyTrackList Invoke WPF 
	   02:14:36 Music.Pause Start 
	   02:14:36 Music.Pause Start 
	   02:14:36 Music.Pause Start 
	   02:14:36 Music.Prepare Start 
	   02:14:36 Music.Kill Start 
	   02:14:36 Music.Kill Finished 
	   02:14:36 Music.NotifyTrackList Start 
	   02:14:36 Music.NotifyTrackList Invoke WPF 
	   02:14:37 Music.Pause Start 
	   02:14:37 Music.Pause Start 
	   02:14:37 Music.Pause Start 
	   02:14:37 Music.Prepare Start 
	   02:14:37 Music.Kill Start 
	   02:14:37 Music.Kill Finished 
	   02:14:37 Music.NotifyTrackList Start 
	   02:14:37 Music.NotifyTrackList Invoke WPF 
	   02:15:05 Music.Pause Start 
	   02:15:05 Music.Pause Start 
	   02:15:05 Music.Pause Start 
	   02:15:05 Music.Prepare Start 
	   02:15:05 Music.Kill Start 
	   02:15:05 Music.Kill Finished 
	   02:15:05 Music.NotifyTrackList Start 
	   02:15:05 Music.NotifyTrackList Invoke WPF 
	   02:15:07 Music.Pause Start 
	   02:15:07 Music.Pause Start 
	   02:15:09 Music.Pause Start 
	   02:15:09 Music.Pause Start 
	   02:15:09 Music.Pause Start 
	   02:15:09 Music.Prepare Start 
	   02:15:09 Music.Kill Start 
	   02:15:09 Music.Kill Finished 
	   02:15:09 Music.NotifyTrackList Start 
	   02:15:09 Music.NotifyTrackList Invoke WPF 
	   02:15:11 Music.Play Start 
	   02:15:11 Music.Kill Start 
	   02:15:11 Music.Kill Finished 
	   02:15:11 Music.Play Empty Music Path 
	   02:15:11 Music.NotifyTrackList Start 
	   02:15:11 Music.NotifyTrackList Invoke WPF 
	   02:15:12 Music.Pause Start 
	   02:15:12 Music.Pause Start 
	   02:15:12 Music.Pause Start 
	   02:15:12 Music.Prepare Start 
	   02:15:12 Music.Kill Start 
	   02:15:12 Music.Kill Finished 
	   02:15:12 Music.NotifyTrackList Start 
	   02:15:12 Music.NotifyTrackList Invoke WPF 
	   02:15:13 Music.Pause Start 
	   02:15:13 Music.Pause Start 
	   02:15:13 Music.Pause Start 
	   02:15:13 Music.Prepare Start 
	   02:15:13 Music.Kill Start 
	   02:15:13 Music.Kill Finished 
	   02:15:13 Music.NotifyTrackList Start 
	   02:15:13 Music.NotifyTrackList Invoke WPF 
	   02:15:26 Exception