Thanks for the response. I'm afraid I can't tell you, because I don't know what the Listary search bar is! I'm probably using only a small part of the program, and I haven't come across the search bar.
I did a bit of experimenting, and found that initially Listary wasn't working with Acrobat either. Then I took a look at the Apps list in Options and saw that Acrobat wasn't included there, so I added it, then rebooted, and hey presto, it now works with Acrobat. So I'd assume that it's something to do with my entry in the Apps listing for Word, but that may be a different problem - it's shown in the list as "Winword", although whenever I open it up, the title bar refers to it as Microsoft Word.
Unless you or anyone else comes up with a possible solution, I'm going to pursue the Apps listing as a possibility and see if I can find out how to include it in that listing. Thanks again for the reply - looking forward to hearing from you.