Produces 'Automation Error' with some graphics cards when using Hardware Acceleration. This
can usually be avoided by setting the Forester Tools/Options 'DirectX Renderer' to 'Software
Renderer'. (The Arboretum uses the same settings as Forester. After changing the settings both
programs need to be restarted before the changes will take effect).
Does not work under Windows NT. As DirectX is not fully supported in NT the preview is not
usable.