Ok I found the file Andrew. I tried did not work.
I dropped it on top of 2018 opened good, quit, did not stick, next round opened in 2005.
The change all wont stick.
Now new error message: can't be opened because from unidentified developer. Madness.
I have have read write, admin, and everyone dont, should I unlock and give those read write? Fishing for ideas..
This file is a recent creation from a great text designer I've used for many years. I could ask her, its so weird.