I prepared a score for printing and it looked correct on screen. It was 19 pages long. When I printed it though, the ending was missing. Logic reformatted the pages so the printout was different than the screen layout. For example, the first page had 4 lines of music in the screen layout, but the printed version (and the saved as PDF version) only had 3. When the printer got to what should have been the last page, i.e. page 19, the ending material was missing. To print the entire work would have required 20 pages. However, it won't let me print just page 20, because that page doesn't exist.