So far nothing in the Latin has jumped out to me, but I've seen a few incorrect English translations. They strike me as simple lapses in focus.
29. The deliberative subjunctive expresses a rhetorical question: Quid facias? - What am I going to do?
Here's a Latin gender error:
32. The gerund or gerundive can show purpose in two ways:
b. accusative following ad. e.g. veni ad Claudium videndam
- came to see Claudius
Overall, a very educational list! It's like a collection of grammatical golden nuggets.