Jaz, SUCCESS! :-) When I checked the file sizes--turns out the *size ratio* was correct but *pixels* were way off--far too large. I used Preview on my Mac to resize each image so it was indeed 800x384, and amazingly, Sync read the files and accepted them. Now i finally have a picture of my dog on the screen of my car. Only took two weeks and about 20 tries, plus one fruitless trip to the clueless dealer. :-[ Thank you SO much. :-)))