The former carries connotations that include mental error while the other explicitly claims any error is mechanical in origin.
That's what i'm getting at, the former doesn't include in it's definition any reason why the error exists. A punctuation error could be derived through mechanical malfunction or through a cognitive malfunction. That has nothing to do with what qualifies as a punctuation error. So GGT is correct.

Moving on... dealing with your second claim that it is more appropriate or precise to say a typographical error, I take issue with that statement as well. The difference between "your", and "you're" is not a slip of the finger. It's your brain grabbing the wrong word because it's grouping them by their phonetic sounds.

Which doesn't constitute a typo and is best catergorized as cognitive error.