NLTagger's enumerateTags() and tags() methods are both broken. I've submitted a bug report. What I find weird is that nobody has reported any similar issues so far.

NLTagger's enumerateTags() API remains broken. Even after following Apple's example from the developer documentation, which is meant to demonstrate how to identify parts of speech in a given text, the only tag returned for each word is OtherWord (see attached screenshot).

As it turned out, we won't get a replacement, just a $200 coupon code. :(

Just wait for the email with the instructions. It's not a big deal to keep it for a few more weeks, or is it? Too bad we don't get a production model in exchange. It's a shame they only give us a $200 coupon. Anyway, it was interesting to play around with it. Well, when it worked - mine was bricked for several weeks after an update.