In reply to Dave1987:
Hi Dave,
Thanks for reporting this. We had someone last night report this issue also and we're aware of it.
I've taken a look at this and it's a tricky one. I can see why the app is crashing, an ascent seems to get into a strange state, but I'm not totally sure how this is happened. It's not affecting everyone either.
We're currently fixing a number of issues and this is one on the list.
Cheers,
Martin