Started Minecraft on this iPad.
Opened a world that we'd been playing in in 1.4.3 for some time.
Joined from two other iPads.
Less than ten seconds after the other iPads had joined, Minecraft crashed on this iPad.
See attached crash log; I can't symbolicate it of course but I can see that the crash is a NULL dereference on the thread labelled MC_SERVER.
Here's the nasty part: when we relaunched Minecraft on the three iPads and rejoined, the players on two other iPads had completely lost their inventory, including what they were carrying.
Obviously, losing inventory is a seriously discouraging side effect for players.
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Is this a crash that can be reproduced again, or did it just happen the once?
Is this a crash that can be reproduced again, or did it just happen the once?

It happened twice in a row, and then we didn't see it any more after that that day. I've attached the other crash log. The crashes do look identical: same offset off NULL, same thread name MC_SERVER, same backtrace in the crashing thread.
I speculated that it might be to do with upgrading the world to a new version, but I don't have any real data about that.
We have been reluctant to enter another world that we care about our inventory in, so we have not tried a ton since that time.

It happened twice in a row, and then we didn't see it any more after that that day. I've attached the other crash log. The crashes do look identical: same offset off NULL, same thread name MC_SERVER, same backtrace in the crashing thread.
I speculated that it might be to do with upgrading the world to a new version, but I don't have any real data about that.
We have been reluctant to enter another world that we care about our inventory in, so we have not tried a ton since that time.
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Thank you for your report!
Crashes such as these are logged automatically, and will be looked into further by the development team.
If you have clear steps to reproduce the issue then please comment below and we will review the issue and reopen accordingly.
If you need help or support you might like to follow a link below.
Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Feedback – 📖 Game Wiki