Hi Wendy,
Thanks for this information.
Please could you change on your projector menu the 16:10 option to "Fill" and keep your screen resolution to 1280x 800. Does this fix the issue?
If you still have issues with the image, I would recommend contacting technical support directly over the phone so we could help assist. Please quote your reference number (00421382).
I hope this helps.
Adam
Promethean Technical Support