I'm running Indesign CS5 & it appears my Adobe PDF presesets have stopped working. Can you help?

Question

I'm running Indesign CS5 & it appears my Adobe PDF presesets have stopped working. Can you help?

Answer 1

It's under utilities in the window menu.
If the simple PDF works, that may indicate a problem with the file after all, but one way to to force the export to the foreground is to create a new Book (File > New > Book), then add the file that's giving you trouble to that book. (a Book is just a container format used to combine multiple .indd files into a single output)
From the Book panel flyout menu you can export to PDF and see what that does. Failure indicates a file problem, success a background task problem.
It's a little odd that you aren't getting an error message....
Anyway, if the problem is the file, try export in two halves. If both halves export, it's a system resources problem and not much you can do other than attempt to see what is using all the memory (probably some large complex vector object, or many vector objects) or just do the export in chunks that work and combine them in Acrobat Pro. If one half fails, try exporting half  fo the failing half at a time. Keep dividing the failing half until you isolate a page with the problem.