Exception Existing Diagrams (#223)
System.NullReferenceException: Object reference not set to an instance of an object.
at SoftwareIdeasModeler.Dialogs.Diagrams.ExistingDiagramsForm.diagramTree_AfterSelect(Object sender, NodeEventArgs e)
at SoftwareIdeasModeler.Controls.FastTree.FastTree.ApplyFilter(String text)
at System.Windows.Forms.Control.OnTextChanged(EventArgs e)
at System.Windows.Forms.Control.set_Text(String value)
at System.Windows.Forms.TextBoxBase.set_Text(String value)
at System.Windows.Forms.TextBox.set_Text(String value)
at SoftwareIdeasModeler.Controls.FastTree.FastTree.FastTree_KeyPress(Object sender, KeyPressEventArgs e)
at System.Windows.Forms.Control.ProcessKeyEventArgs(Message& m)
at System.Windows.Forms.Control.WmKeyChar(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)