Some of those mistakes really shouldn't have happened, particularly because it was a community of developers and not just some big, old-school corporation.
It's nice to see 95% of people eventually received their items but that could've been achieved with a lot less hassle!
On a side note, I hope the addressing experience was insightful and will be thought of better in future applications. It irks me to see so many web forms with the very American form of "City, State, ZIP" that are not designed to handle any exceptions to that rule, not because the company policy doesn't cater to an international audience, but because the developers didn't realise that addressing is very different across the world - and those people all get their mail just fine.