Having used Gens without a single problem, for I think about 18 years, I have what I guess is a corrupt index.
My problem manifests itself as all the details of a couple in my direct line have disappeared. I can approach the missing couple using "Find". For example, finding the parents of my male "William" has him listed as a son but the text colour is black (not the normal) and bold (as in direct line) but when I click on William's box I get a screen of blank boxes. If I approach from descendants of William I see the same result.
I have reservations about replacing the details without removing all data that relates to this couples original ID's record. I can see duplicate records causing problems when used during infrequent operation.
Is there any way of establishing the cause of the problem ?