A family of Microsoft word processing software products for creating web, email, and print documents.
I have been banging my head against a brick wall for many years on this issue, it has been a issue for at least 15 years. It seem to crop up every so often and I have never received a solid response from anyone.
It happens with big files with many screendumps.
I have found that by turning off Track Changes when I am replacing screen dumps that this seems to help.
Also do I suggest you not work with an old file type as this type of action seems to upset software.
I go back to a back up file and and start my work again.
Regards
Paul E Harris