One Windows 7 computer displays this error when opening Word documents.
"max element depth constraint violated"
in Word 2013
Other computers can open the same files with no problem.
There is no bluetooth add-in.
Changing the file extension to .zip and deleting one of the files contained in the archive doesn't help.
At that, it happens on multiple files, not just one. So it's likely not the file itself but something in Word.