The Mirror in my Mind

My copy of Microsoft Word has conceived a vendetta against Georges Chastellain. More specifically, against particular passages in the Chroniques des ducs de Bourgogne. Every time I open a file containing any of these passages, Word gives me an error message and quits.

Actually, not just Chastellain. Apparently there is also a specific passage in the Croniques of Jehan de Wavrin that has also offended Word.

I am all bafflement.