title: Optional("Operation in progress.") when using HomeKit to add accessory on iOS simulator
body: <p>I'm using Xcode 7.2 with HomeKit Accessory Simulator Version 1.3 (77.1)</p>
  
  <p>I have the following code in my HomeKit code </p>
  
  <pre><code>//MARK: UITableViewDelegate
  func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
      let accessory = accessories[indexPath.row] as HMAccessory
  
      if let room = homeManager.primaryHome?.rooms.first as HMRoom? {
          homeManager.primaryHome?.addAccessory(accessory, completionHandler: { (error) -&gt; Void in
              if error != nil {
                  print("Issues adding accessory to home. \(error?.localizedDescription)")
              } else {
                  self.homeManager.primaryHome?.assignAccessory(accessory, toRoom: room, completionHandler: { (error) -&gt; Void in
                      if error != nil {
                          print("Issues adding accessory to room. \(error?.localizedDescription)")
                      } else {
                          self.navigationController?.popViewControllerAnimated(true)
                      }
                  })
              }
          })
      }
  }
  </code></pre>
  
  <p>When I click on the UITableViewCell, it brings up the Add Accessory dialog and after I enter the pairing / setup code, it gives me the error :</p>
  
  <blockquote>
    <p>Issues adding accessory to home. Optional("Operation in progress.")</p>
  </blockquote>
  
  <p>At other times I get </p>
  
  <blockquote>
    <p>Issues adding accessory to home. Optional("Client request error when
    communicating with accessory.")</p>
  </blockquote>
  
  <p>When I run the same code on iPhone (iOS 9.2.1) I get the following error</p>
  
  <blockquote>
    <p>Something went wrong when attempting to create our home.
    Optional("Cloud data sync is in progress.")</p>
  </blockquote>
  
  <p>Is this is a known issue in HomeKit? Or is it a bug in the HomeKit Hardware Simulator? Is there a workaround / fix?</p>