New
#11
Well, yes, I expected some issues with compatibility but the odd thing is that I used it for a month without this problem, which didn't appear until after I'd done a second install (clean, from scratch) of Windows.
This seems to imply that there is no inherent compatibility problem with my version of Winword.exe (9.0.2720) but rather that something in the new installation hasn't got set up properly.
To reiterate: Word works perfectly fine; opens, edits, saves and prints. There is no problem until I try to quit which is when I get the error pop-up attached to my OP. Also, all the other components of the Office 2000 suite launch and quit gracefully.