FrameMaker crashes when performing book-level activities opening a chapter file

Brand-spanking new version of FrameMaker 2017 installed, and on brand-new computer.

OK, technically, 13-inch 2017 core i5 MacBook Pro w/ 16GB RAM, 256GB HDD, running macOS High Sierra, Parallels, Windows 10 Pro, and demo version of FM (to test, plan to subscribe). I increased the amount of memory available to Windows in the VM from the default 2GB to 6GB.

In a way, this turns out to be an extension of the "crash when printing to PDF question" I asked awhile back. I have 2 books that I inherited. Both have "missing font" issues, but at present, the substitution being made is simply a minor variant of he original and doesn't change anything significant, so I've ignored it. (Even though I save both files and books, the substitution never actually gets saved and I get the message every single time. Annoying.)

When I try to do anything at a book level with either of these books, FrameMaker crashes. That includes printing, updating tables, and searching (so far).

So I did a little test. I created a new book, added a couple of chapter files with some lorem ipsum content, and added a TOC file. I then did a book-wide search. No problem.

I went back to one of the two books I've been working in. I decided to start a book-level search from the beginning of the book, and I found something interesting. I found the text in the TOC file OK and the LOF file OK, but when FM tried to open the first chapter file to look, that's when it crashed.

I then opened just the chapter file and did the same search, but limited it to just the document. Everything OK.

I suspect that the "missing font" dialog, which I have never directed to stop showing, might be the issue here, or maybe just that there's a "missing font" issue at all.

I'm a bit reluctant to actually direct that dialog to stop showing because I like to know what's going on with my work, even if it is annoying. I can't think of anything else that might be causing this because this is pretty much the basic difference between the two books.

Any thoughts or ideas on how to resolve/fix this are appreciated. Actual fixes > workarounds.