title: Login and Registration error 3840
body: <p>I'm following along on this tutorial 
  <a href="http://www.raywenderlich.com/13511/how-to-create-an-app-like-instagram-with-a-web-service-backend-part-12" rel="nofollow">http://www.raywenderlich.com/13511/how-to-create-an-app-like-instagram-with-a-web-service-backend-part-12</a> and got to the part where you implement the login and registration through Objective-c. Every time I press register or login I receive an error saying "The operation couldn't be completed. (cocoa error 3840). Also I'm not getting an error back in xcode. Help please</p>
  
  <p>I just checked the mysql database and it inserts a user id but no text into username and password field</p>