Odd problem with trill notation

This is with an xml. Some trills work, others produce the following result (see pic). Instead of an auxiliary note I just a parenthesis with a (-) sign. I’ve deleted the note and tried again but same results. Thanks for any suggestions.

You’ve got some kind of edits made to notehead sets that is preventing the auxiliary notes from drawing properly. Go to Library > Notehead Sets and reset any changes you’ve made to the notehead sets in there.

Thanks for the reply.