That's okay, Help doesn't have one to begin with. :P
Yeah. I felt like an idiot after noticing that.
Miles. I think the error for Syntax input means its an unrecognized command. If I'm wrong, someone correct me. If your joining someone else's server, its probably a crappy made city rp mod. (No offense to the person who made it.) If it is on your own server, you may have a bad add-on or modified something in one to cause that.
Would you mind posting a screen shot of the console and whatever it is prompting you for "Yes" and "No"?