I feel like this some days. Falcon lands on droneship, but the lockout collet doesn't latch on one the four legs, causing it to tip over post landing. Root cause may have been ice buildup due to condensation from heavy fog at liftoff. A video posted by Elon Musk (@elonmusk) on Jan 17, 2016 at 7:07pm PST Well, darn. Here's the link. https://www.instagram.com/p/BAqirNbwEc0/ This is also posted at http://elainegrey.dreamwidth.org/594626.html .