title: Facebook login fails with code 190 - "The access token was invalidated on the device"
body: <p>I've read all other related questions here, and found no answer.</p>
  
  <p>I have been able to reproduce a scenario in which Facebook login fails with code 190, and a message of "The access token was invalidated on the device".</p>
  
  <p>For some reason, it only happens when the user sets his credentials in the iOS Facebook settings page.  If the user is logged into Facebook in Safari (and only in Safari), then the authorize method works fine.</p>
  
  <p>If the user is logged into Facebook in both Safari and iOS, authorize fails, and even numerous attempts fail (more than 10).</p>
  
  <p>When I log out of iOS' Facebook settings page and keep Safari logged into Facebook, authorization succeeds.</p>
  
  <p>I'm using the iPhone Simulator, so I don't have the Facebook App installed, and when my app calls <code>[facebook authorize]</code>, it opens up in Safari (if iOS settings are empty).</p>
  
  <p>Facebook SDK 3.1.1.</p>
  
  <p>Any ideas?</p>