I emailed this bug to the developers today, but I'll post it here too in case others have come across it:
I've been playing your iOS implementation of Le Havre on my 2nd Generation iPod Touch, and I've found what appears to be a bug in the five player game (me plus four AI players). After each player has had their final actions, by which I mean the ones after the final ship card has been revealed, the game exits back to the iOS "desktop". Games with four and fewer players complete normally, i.e. each player's final cash, scores, etc. are shown in a coloured warehouse with animated fireworks over the winner's name. I can reproduce the problem in the five player game every time.
When I reopen the app, the incomplete five player games are shown in the game list with the status "Active: Full version, Final scoring, 5 players, 4 AI", followed by the player names. If I try to re-enter such games, the app says "Loading" then exits back to the iOS desktop again.
My iOS version is 4.2.1 and I have 1.4 GB free space.