Multiple MKMapView 's causes EXC_BAD_ACCESS

Question

My app has a need to implement a map in two seperate UIViewController's, the problem is that once one of the maps has been rendered, trying to open the second causes a EXC_BAD_ACCESS error that shows at the declaration of AppDelegate, I have tried using Zombies and it shows nothing, tried Analyzing, again shows nothing, I have tried presenting the maps in a variety of ways, Including: programatically presentViewController(), as well as having a mapkit in each .storyboard and using containerViews that embed a map.storyboard which only contains a mapkit.

typing bt in the console gives me this:

libglInterpose.dylib`EAGLContext_renderbufferStorageFromDrawable(EAGLContext*, objc_selector*, unsigned int, id) + 204, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=EXC_ARM_DA_ALIGN, address=0x69725659)

Im using Xcode7-Beta5 and Swift, any help other possible debug methods, or some way to manage the maps more efficiently, would be greatly appreciated.

MapViewController.swift (Doesn't do anything yet, since i can't get them to both render)

import UIKit
import MapKit

class MapViewController: UIViewController {

    @IBOutlet weak var mapView: MKMapView!


    override func viewDidLoad() {
        super.viewDidLoad()

    }

    override func viewDidDisappear(animated: Bool) {
        super.viewDidDisappear(animated)

    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()

    }

}

EDIT:

ok, so the hierarchy goes somewhat like this:

I have a UITabBarController, one of the tabs is a map, from another tab there is a view hierarchy that eventually leads to a button that presents another map.

I was able to get both maps rendering by placing my instance of Map.storyboard within my TabBarController subclass, then using UIContainerViews on both my UIViewControllers that should have the map and adding a child ViewController (map from TabBarController) and its view to the ViewContainer