Everytime while open new project an Erro comes out as following which caused much annoying.
Error in ArtScopeThumbs_OnPreviewMouseDoubleClick:
System.InvalidOperationException: Cannot start process because a file name has not been provided.
at System.Diagnostics.Process.Start()
at System.Diagnostics.Process.Start(ProcessStartInfo startInfo)
at ArtScope.PhotoViewer.ShowPhoto.ArtScopeThumbs_OnPreviewMouseDoubleClick(Object sender, MouseButtonEventArgs e)