jpeg sais:

Work with that. What does he want to do?

add to that: What can he do? Being a good manager is often about finding useful traits in difficult people. Sometimes it takes a lot of trial and error to find something to which a person can contribute.

This fellow may feel the fact that he is out of his depth and respond by being overly needy of input about his code. He may need to be on something outside the main development effort to which he can still feel he's contributing. He might work on documentation or testing. He could do literature searches ( online of course. ) Profiling, translations, and bug list maintance are some other common task he could try.

Another way to avoid the "lost in the dark" syndrome is to pair him with another intern and foster some competition. This way you also look good to your boss. "Ropey manages two interns, why can't you?"

Good luck