I have recently reloaded my Mapmaker Pro software to a new computer but it will only display map furniture from my saved projects and no layers of map tiles or shape files.
When you copied the layer files from your old computer to your new one were they put in exactly the same location on the hard disk?
Do the layers in question load correctly if added to a blank project? If they do then it suggests a file location issue with the project looking for a files in the wrong location.