Okay, me,
I looked over the companies table, since it seemed to be trying to output companies before it fails. (The other thread has contacts.)
I saw that all of the companies that have an apostrophe aren't escaped, and I wondered if that was killing the query. So I removed the apostrophe from the 30 or so company names via PHPMyAdmin.
Problem persists, but now, for a company name that was "Brown's Company," and is now "Browns Company," I can't find the record in Feng with "brown's" or "browns," but it is still in the system and can be found by searching for "company."
Is that because I changed it on the backend and there is a cached index value or something?
Still not sure what's causing the problem in the Compose mode.