I’m coming to the end of a working day here in Europe.
And my very, very simple question has attracted no replies - from which I conclude that (scarily) there may in fact be no reasonably up-to-date combination of OS X, Endnote, and Word known to the community that just works without problems - which is surely what paying customers have a right to expect. Had there been an answer, I suspect that some member of the community would have told me by now.
Clarivate is based in Philadelphia, so I suppose one should give them time to reply before giving up altogether.
BTW Clarivate: if the answer to the question in my header is “There is no combination of OS X, Endnote, and Word that just works without problems” (apart from going back several years to what I used to use), then please just say so. I shall then ask you to refund the more than £100 I have just spent on Endnote X8, in reliance on the compatibility statement I cite in my first post, and with a very heavy heart, begin to consider other options such as Zotero.
Now that’s reasonable, isn’t it?