When searching for a contact that doesn't exist via the REST API, you get back an error

When you search for a contact (at least by e-mail address, haven't tested other methods) via the REST API that does not exist in the database, you get back an error saying: "Could not interpret return values from function."

This should not give an error, just an empty result set. (I.e. is_error should == 0).

I'll see if I can hunt down the problem and fix it if possible.