On Sat, 23 Dec 2017, Scott Kostyshak wrote:
I mentioned modules in my first email so I'm assuming you already checked
modules as the source of discrepancy.
If you send us a minimal example, we can take a look.
Scott,
Yes, I checked the modules.
I resolved the issue by creating a new document using svmono.layout and
inserting the original file. Now the Tools menu shows Check TeX.
Why this tool did not appear in a new document using the KOMA-Script book
class is a mystery, but is now moot.
My thanks to you and Paul for spending time on this issue.
Happy holidays,
Rich