Workout didn't sync with My Fitness Pal this morning

I just did another workout, think I might have found out what the problem was. After finishing the workout I previously mentioned, I think I clicked "skip" instead of waiting on one of the post workout stats . Today I didn't hit skip, I waited until the
final screen, I think "exit" if I'm not mistaken. Workout posted on MFP right away.

Today when I launched Xbox Fitness there was an update for the game. The P90X for Xbox Fitness workouts now appear in my library under Workout Programs.

Didn't buy them yet, but definitely will soon.

Well the March update didn't do anything to fix the problem (I know Fitness is not listed as one of the updates, but I was hoping some underlying change/fix would address the problem). Update was applied this morning, did a workout, crashed at the end.

Well I thought I figured this out by always quitting the Fitness app and didn't have any crashes at the end of a workout in almost two weeks, but it happened again today at the end of my second 10-minute workout. Thankfully it has not happened after any
of the longer workouts, yet...

I seem to have the same issue. I didn't use Xbox Fitness for a while, but when I finally did a few workouts again, a few days ago, I noticed there were much less scores from friends in the messages than there used to be. I also didn't get any friend challenges
while doing two of the Yo:30 workouts.

I didn't pay that much attention to it. Of course it could just be my friends started to workout less. But I have a lot of Xbox Fitness users added to my friends list (literally hundreds). It seems unlikely that many of them stopped playing.