I had the same problem and found out I didn't have the most current File Assistant Disk. Mine has a green background w/ a circle in the center divided into four parts. The updated one has a blue cover with the words 3D File Assistant in left corner and the word PFAFF in bold red letters in top right hand corner and a picture of a design in the machine screen in the center of the cover. If you don't have this one you should check with Pfaff, there may be a small fee for it but it will be worth it if you can use your embroidery attachment.