I am working on a 400-page document in InDesign and each time that I create a PDF file, InDesign is creating typos. I fix the errors, and then it creates other typos somewhere else in the file. I HAVE to get this document done...any help would be great.

I've literally seen it rewrite what I was trying to type. Any thoughts would be helpful. Today is Oct 15, 2010, and I need assistance as soon as possible. Please write directly to me at justanefriend@yahoo.com. Thank you.