I was able to get the problem resolved by reducing the resolution of each slide from 600 or 1200 pixel per inch to 200. I added all the slides to a new show and created a new .exe, which worked on both the XP, and ME computers. The point where the Parameter is Incorrect error occured was where the resolution of the slides changed from 600 to 1200 ppi. Could the image taken longer to load (it was about 6 MB) than they were to be displayed 4 sec, and this cause the problem? Thanks all for your responces. Ed