Hi Steven,
You have asked your question at the right list :)
The problem you experiencs is a known bug:
https://bugs.gnucash.org/show_bug.cgi?id=797011
The good news is this bug has been fixed since the gnucash 3.4 release and
will be in GnuCash 3.5 which is planned for the end or March.
If
I apologize if this is going to the wrong user list...this is the first
time I've posted a question.
I opened an existing account file following a clean install of Windows
10 and GnuCash 3.4, and found the program ran correctly and printed all
reports, except for selecting File > Print Checks
