Hello Everybody I use pte de luxe 7 When I play back the slides in the preview screen everything works perfectly; audio and video files also. However, When I try to preview I get an error message about a missing file; an old file that I had deleted but since replaced with a different one. This message also appears when I try to save as Pte file. (I have not created an exe file yet.) I have closed and restarted but no change. Hope what I have described is adequate I would really appreciate any help on this and I offer you many thanks in advance.