Push view: pendant une transition ou une présentation existante; la pile de navigation ne sera pas mise à jour

Je reçois cette erreur quand il essaie de pousser une-vue-contrôleur.
j'ai un segue joint de la cellule de la table,
pushViewController:animation: appelé en même temps qu'un de transition ou de présentation est en cours; la pile de navigation ne sera pas mis à jour.

class PlaylistsViewController: UIViewController, UITableViewDelegate, UITableViewDataSource, UIGestureRecognizerDelegate {
let ItemRecordName = "Playlists"
var playlists = NSMutableArray()
@IBOutlet var tableView: UITableView?
var cloudm = CloudManager()
var container: CKContainer?
var publicDatabase: CKDatabase?
var edgePan = UIScreenEdgePanGestureRecognizer()
override func viewDidLoad() {
super.viewDidLoad()
self.setUpMenu()
container = CKContainer.defaultContainer()
publicDatabase = container?.privateCloudDatabase
self.tableView!.contentInset = UIEdgeInsetsMake(64, 0, 0, 0)
}
func setUpMenu() {
self.slidingViewController().topViewAnchoredGesture = ECSlidingViewControllerAnchoredGesture.Panning |  ECSlidingViewControllerAnchoredGesture.Tapping
//self.navigationController.view.addGestureRecognizer(self.slidingViewController().panGesture)
    edgePan = UIScreenEdgePanGestureRecognizer(target: self, action: "menuButtonTapped")
edgePan.edges = UIRectEdge.Left
edgePan.delegate = self
self.navigationController.view.addGestureRecognizer(edgePan)
self.navigationController.navigationBar.translucent = true
let icon = FAKIonIcons.naviconIconWithSize(40)
icon.addAttribute(NSForegroundColorAttributeName, value: UIColor.whiteColor())
let iconImage = icon.imageWithSize(CGSizeMake(40, 40))
let plusicon = FAKIonIcons.ios7PlusEmptyIconWithSize(30)
plusicon.addAttribute(NSForegroundColorAttributeName, value: UIColor.whiteColor())
let plusiconImage = plusicon.imageWithSize(CGSizeMake(30, 30))
let barButton = UIBarButtonItem(image: iconImage, style: UIBarButtonItemStyle.Plain, target: self, action: "menuButtonTapped")
let barButton2 = UIBarButtonItem(image: plusiconImage, style: UIBarButtonItemStyle.Plain, target: self, action: "openNameForPlaylist")
barButton2.tag = 1
let negativeSpacer = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.FixedSpace, target: nil, action: nil)
let negativeSpacer2 = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.FixedSpace, target: nil, action: nil)
negativeSpacer.width = -10
negativeSpacer2.width = 0.0
self.navigationItem.leftBarButtonItems = NSArray(objects: negativeSpacer, barButton)
self.navigationItem.rightBarButtonItems = NSArray(objects: negativeSpacer2, barButton2)
}
override func viewDidAppear(animated: Bool)  {
self.getPlaylists()
}
func menuButtonTapped () {
self.slidingViewController().anchorTopViewToRightAnimated(true)
}
func getPlaylists() {
cloudm.fetchPlaylistNames("Playlists", completionHandler: {(records: NSMutableArray) -> Void in
if records.count > 0 {
println("got Playlists")
self.playlists = records
self.tableView?.reloadData()
//self.noFoodLabelAlpa(0, withDuration: 0, withDelay: 0)

} else {
println("dont got Playlists")
//self.noFoodLabelAlpa(1, withDuration: 1, withDelay: 1.8)
        }
})
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
//Dispose of any resources that can be recreated.
}
func openNameForPlaylist() {
var alert = UIAlertView(title: "Playlist Name", message: "Please choose a name for your Playlist",  delegate: self, cancelButtonTitle: "Done")
alert.alertViewStyle = UIAlertViewStyle.PlainTextInput
alert.show()
}
func alertView(alertView:UIAlertView, clickedButtonAtIndex buttonIndex: NSInteger){
println(alertView.textFieldAtIndex(0).text)
addPlaylist(alertView.textFieldAtIndex(0).text)
}
func addPlaylist(name: String) {
if playlists.count == 10 {
var alert = UIAlertView(title: "Playlist is full", message: "You've reached the maximum number of songs in your playlist, to add more please remove some", delegate: self, cancelButtonTitle: "ok")
alert.show()
} else {
println("playlist count = \(self.playlists.count)")
var newRecord: CKRecord = CKRecord(recordType: ItemRecordName)
//var playlistName = "Playlist \(self.playlists.count + 1)"
        newRecord.setObject(name, forKey: "playlistName")
self.cloudm.saveRecord(newRecord)
self.playlists.insertObject(newRecord, atIndex: 0)
//self.playlists.addObject(newRecord)
        self.playlists.sortUsingDescriptors([NSSortDescriptor(key: "playlistName", ascending: true)])
var indexPath = NSIndexPath(forRow: 0, inSection: 0)
self.tableView?.insertRowsAtIndexPaths([indexPath], withRowAnimation: UITableViewRowAnimation.Automatic)
}
}
func numberOfSectionsInTableView(tableView: UITableView!) -> Int {
return 1;
}
func tableView(tableView: UITableView!, heightForHeaderInSection section: Int) -> Int {
return 1
}
func tableView(tableView: UITableView!, viewForFooterInSection section: Int) -> UIView {
var view = UIView(frame: CGRect.zeroRect)
return view
}
func tableView(tableView: UITableView!, heightForFootInSection section: Int) -> Int {
return 1
}
func tableView(tableView: UITableView!, numberOfRowsInSection section: Int) -> Int {
return playlists.count
}
func tableView(tableView: UITableView!, cellForRowAtIndexPath indexPath: NSIndexPath!) -> UITableViewCell!  {
let CellIndentifier: NSString = "playlistCell"
var cell : UITableViewCell  = tableView.dequeueReusableCellWithIdentifier(CellIndentifier) as UITableViewCell
var selectedView = UIView(frame: CGRectMake(0,0,cell.contentView.frame.size.width, cell.contentView.frame.size.height))
cell.selectedBackgroundView = selectedView
cell.backgroundColor = UIColor.clearColor()
var records: CKRecord = self.playlists[indexPath.row] as CKRecord
var playlist:String = records.objectForKey("playlistName") as String
println("Playlists are \(playlist)")
cell.textLabel.text = playlist
return cell
}
func tableView(tableView: UITableView?, canEditRowAtIndexPath indexPath: NSIndexPath?) -> Bool {
//Return NO if you do not want the specified item to be editable.
    return true
}
func tableView(tableView: UITableView!, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath!) {
if editingStyle == .Delete {
//Delete the row from the data source
        self.cloudm.deleteRecord(self.playlists[indexPath.row] as CKRecord)
self.playlists.removeObjectAtIndex(indexPath.row)
tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: .Fade)
}
}
func tableView(tableView: UITableView!, didEndEditingRowAtIndexPath indexPath: NSIndexPath!) {
if playlists.count > 0 {
//self.noFoodLabelAlpa(0, withDuration: 0, withDelay: 0)

} else {
//self.noFoodLabelAlpa(1, withDuration: 1, withDelay: 0)
    }
}
override func prepareForSegue(segue: UIStoryboardSegue!, sender: AnyObject!)  {
var indexPath = self.tableView!.indexPathForSelectedRow()
var record: CKRecord = self.playlists[indexPath.row] as CKRecord
let playlistOpen: PlaylistsOpenViewController = segue.destinationViewController as PlaylistsOpenViewController
playlistOpen.parentRecordID = record.recordID.recordName
playlistOpen.cloudm = self.cloudm
}

}

Mise à JOUR:
Ok, donc j'ai installé xcode beta 5, et maintenant les deux le simulateur et mon téléphone sont à recevoir cette erreur, qui n'existait pas avant cette version.. des idées?

source d'informationauteur bevbomb