The details of the error weren't the point of my example. And being that terse sounds like you're barking orders at the user. Once again, shortness is fine for

The details of the error weren't the point of my example. And being that terse sounds like you're barking orders at the user. Once again, shortness is fine for programmer communication, but personally for an end user just going about their day I would avoid such an impertinent tone.