There is probably a problem with a graphic or a font to cause export of PDF to fail. Try creating an export of only the first half of the file, then the second half. Whichever portion fails indicates that there is where the problem is. The divide that portion of the file in half, and create a PDF from each half. Continue until you identify the page. Then start removing objects (probably a graphic) until it creates correctly. Most likely, the graphic needs to be replaced.
I still crashes.
Yesterday, was all operating normally and today I put a few new pictures and some texts.
My windowsa were UPDATE today , maybe that's the problem?
with other file works normally. The problem is today's additions as you instructed me. Tnx!