Hi!

I can reproduce a crash anytime in ATVO 1.29.9.1.

1) Load a theme
2) Click on 'Script performance' button -> the window popup
3) Don't click on 'Script Performance' button to close the window but close the 'Script Perfomance' window with the cross [X].
4) Click on 'Script Performance' button again -> crash

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Download logfile

Error: 5/19/2020 22:16:47 (UTC)
ATVO version: 1.29.9.1
Themes SDK version: 1.19.0.0
Theme version: 1.0.0.0

Unhandled exception
System.InvalidOperationException: Cannot set Visibility or call Show, ShowDialog, or WindowInteropHelper.EnsureHandle after a Window has closed.
   at System.Windows.Window.VerifyCanShow()
   at System.Windows.Window.Show()
   at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
   at System.Windows.Controls.Primitives.ButtonBase.OnClick()

Thanks, will be fixed in next update.