This has been going on for me for at least a few weeks. Everything works fine until I go into the page with auctions that I've sold, at which point the app will stop working and close. Both the app and my phone (HTC One X) are up to date.
We released a new build that may resolve the crashes you're experiencing. There were issues with Jelly Bean and the Auction House in general, as well as Safari Hats, due to an unsupported asset. The latest build addresses all of these particular issues.