My problem is back!! I had resaved my administrator user file by simply changing my name a bit. That seemed to work. But today, the problem was back!!!
Selecting my admin account, making sure I had first and last name in the blanks, and then clicking “Bulk Update” as specified above worked for me. WEIRD problem! First I’ve had like this with MANY WP blogs.
Having the same problem. Trying to edit a post or write a new one. When I hit save/publish, I get the popup box warning me about navigating away from page.