Do you mean the 4.12 Beta?
Unfortunately for me with a 5X running 4.12 beta, MYWatch is still crashing when displaying sun data. Actually it's much worse on the new beta because now anytime one uses the map or updates the time using GPS, the sun data automatically starts on the WF leading to a quick crash. Prior to this update, you could use the GPS as long as you didn't change to another watch face and return. That gave us days of operation, just with no sun data. Now we can't use GPS at all with this watch face. BUMMER! I was hoping for progress and instead we go backwards. Of course the beta will help other watch faces that are still being updated.
That's weird. Mine is still going, not one single crash since I updated to the beta last night. I've updated the sunrise/set info and have had tons of notifications come through which before always triggered a crash. I'm a happy camper, at the moment anyway, as it seems the dev has quit working on this face.
Removing the My Watch watch face using the Connect Mobile app and then reinstalling it made the watch face appear again after crashing.
Mine worked fine for a while with 4.12, but when I tested changing watch faces it immediately crashed.
That's interesting. Did you notice that with the new beta 4.12, the sun data updates as soon as you get a GPS lock? Previously for this WF anyway, you had to get a GPS lock, then open a different watch face, then reopen the MyWatch face before the sun data would update. Now it updates immediately after GPS lock.