More headaches....after this, https://premium.wpmudev.org/forums/topic/bp-corporate-update-for-bp-15-killed-my-site
I simply rolled back to the previous version until a fix is in. Not a big deal. But once I reactivated the older version, now I can't get control over my navigation bar. See the screenshot. All the BP items are there, and the nav has been hijacked.
Normally, simply setting the menu in Appearance -> Menus fixes this right away. What did I miss?