I would guess that your document has picked up a corruption in one of the sections which is causing a crash when you ask for pagination to occur. To fix this, I would
1. Take a copy of the file, run a search and replace to remove any existing section breaks. This is a Find/Replace where you find "^b" and replace it with "^p".
2. Then Select All except the last return in the document and paste that content into a new document.
3. Save this new document and see if the corruption is still present.

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Andrew Lockton
Chrysalis Design, Melbourne Australia