George, thanks for the comprehensive response!
When a visitor loads wrgw.fccrockwood.org/shows – the calendar displays fine; navigating from there does not create any issues. However, if you were to go to wrgw.fccrockwood.org and click “Shows” on the menu, it would not appear as it should.
I don’t have the Ajaxify WordPress Site plugin installed at wrgw.fccrockwood.org, however I can’t speak to whether the developers (@mawkkhan) have used pieces of it, or how they use ajax for the navigation.
It’s my experience that @mawkkhan is available overnight (because of time difference) so hopefully we can expect a response tomorrow.
Thanks again.