compile error in AppDelegate.swfit when upgraded to Xcode 6.1 - swift

Question

After upgrading to xCode6.1, I can't compile my project which is ok last time. I have never changed anything in this file. Please help me !!!
AppDelegate.swift:75:29:
errorWithDomain(_:code:userInfo:)' is unavailable: use object construction 'NSError(domain:code:userInfo:)
lazy var persistentStoreCoordinator: NSPersistentStoreCoordinator? = {
// The persistent store coordinator for the application. This implementation creates and return a coordinator, having added the store for the application to it. This property is optional since there are legitimate error conditions that could cause the creation of the store to fail.
// Create the coordinator and store
var coordinator: NSPersistentStoreCoordinator? = NSPersistentStoreCoordinator(managedObjectModel: self.managedObjectModel)
let url = self.applicationDocumentsDirectory.URLByAppendingPathComponent("PassNote.sqlite")
var error: NSError? = nil
var failureReason = "There was an error creating or loading the application's saved data."
if coordinator!.addPersistentStoreWithType(NSSQLiteStoreType, configuration: nil, URL: url, options: nil, error: &error) == nil {
coordinator = nil
// Report any error we got.
let dict = NSMutableDictionary()
dict[NSLocalizedDescriptionKey] = "Failed to initialize the application's saved data"
dict[NSLocalizedFailureReasonErrorKey] = failureReason
dict[NSUnderlyingErrorKey] = error
error = NSError.errorWithDomain("YOUR_ERROR_DOMAIN", code: 9999, userInfo: dict)
// Replace this with code to handle the error appropriately.
// abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
NSLog("Unresolved error \(error), \(error!.userInfo)")
abort()
}

Answer 1

Try using this command in Xcode:
cmd + shift + k
Ah, i see. I am also developing in Swift and they changed some of the standart implementations.
All you need to do is change the function into what Xcode is saying.. :) I had like 90 changes in my project.
So you need to change it to this:
NSError(domain: "YOUR_ERROR_DOMAIN", code: 9999, userInfo: dict)

Answer 2

I had this error when running my code in the new Xcode 6.3 Beta. This is part of the CoreData code that is generated, when you first create your app.
*********************************Before*******************************************
// Report any error we got.
let dict = NSMutableDictionary()
dict[NSLocalizedDescriptionKey] = "Failed to initialize the application's saved data"
dict[NSLocalizedFailureReasonErrorKey] = failureReason
dict[NSUnderlyingErrorKey] = error
error = NSError.errorWithDomain("YOUR_ERROR_DOMAIN", code: 9999, userInfo: dict)
// Replace this with code to handle the error appropriately.
// abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
NSLog("Unresolved error (error), (error!.userInfo)")
abort()
********************************After*********************************************
var dict = [String: AnyObject]()
dict[NSLocalizedDescriptionKey] = "Failed to initialize the application's saved data"
dict[NSLocalizedFailureReasonErrorKey] = failureReason
dict[NSUnderlyingErrorKey] = error
error = NSError(domain: "YOUR_ERROR_DOMAIN", code: 9999, userInfo: dict)
// Replace this with code to handle the error appropriately.
// abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
NSLog("Unresolved error \(error), \(error!.userInfo)")
abort()

Answer 3

Swift 4
if this error is showing you in core data just delete/uninstall your app from simulator or phone(if you are running in phone) Click shift + cmd + H for go to Home and long press on app icon and now clean and built your app.
Clean - shift + cmd + k
Built - cmd + B
Run it.
This error shows because of you copied your project's folder from one computer and transfer it to another.

Answer 4

Reset content and settings on iOS Simulator worked for me.