The CDGFix 3 Super workspace consists of five windows, as described in Screen layout. Each window can be individually shown/hidden by using the items on the View menu. However, sometimes a window may appear invisible even if the corresponding menu item is checked. This may be a result if the window in question has been moved/resized off screen.
To remedy this situation first make sure that the "lost" window is enabled (checked) on the View menu, then select Dock Open Windows on the Window menu. This operation will relocate all open windows (the windows that is marked as enabled on the View menu) to their default positions. As a result any window moved or resized off screen will be moved back into view.