Watch crashed during CSS test.

Same thing here. Twice my watch crashed  -each time after completing the next to last interval during the "rest" phase. Weird

Has happened with EACH swim after the update. Never happened before. I'm guessing it's a software thing. Hoping it is not a watch thing. 

Yes I have had the same problem during execution of normal workouts. When pushing the lap button  the watch automtically reset itself.

Rats. I was hoping I did something wrong.

Update. After updating I went back and created new workouts, downloaded them and they all worked well. only the workouts done and downloaded pre 2.4 update crashed. 
who knows. Best of luck

Same here. Watch restarted itself during workout after pressing Lap button. Happened several times during custom workouts

Happening to me too.  Seems to be only longer workouts or a longer continuous interval within a workout. The watch does still have some of the info  about the swim after the crash, but it doesn’t calculate the aerobic and anaerobic stats and it doesn’t reflect the distance in the total swim distance displayed on the watch face. 

I’ve already tried a soft and hard reset. Neither worked. 

This has happened to me on TWO separate occasions -- most recently during this morning's workout.  I went to save the workout and the screen showed the "crash" triangle.  The watch rebooted, but it did not display the yardage on the watch face.  I thought all was lost, BUT when I connected with the app on my iPhone, the workout stats showed up.  How can I get that information to show on the watch?