If it's not working correctly on a PC, then either:
• there are paragraph breaks in the range; or
• the document has some form of corruption.
Corrupt documents can often be 'repaired' by inserting a new, empty, paragraph at the very end, copying everything except that new paragraph to a new document based on the same template, closing the old document and saving the new one over it. Have you tested with the attachment to post #7? I have, and it absorbs the manual line breaks in both the .doc and .docx formats

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Cheers,
Paul Edstein
[Fmr MS MVP - Word]