In my book manuscript something has gone wrong with some citations, that are randomly adding authors names after the date, e.g. " (Brezina, McEnery, & Wattam, 2015Brezina, McEnery, & Wattam)". This started to happen about 10 days ago. I have been in touch with Jon at Bookends, who assures me the problem is not with Bookends. I have some urgent timelines on a couple of chapters - can you advise me how to sort this out? The error is NOT in the information entered in the Bookends database (ie this particular example is properly entered into Bookends, and up until recently appeared as it should). It seems something has corrupted. Can you give me some advice on how to fix this? I'm on OS 10.11.4.