Can't assign custom view manager in storyboard

I have absolutely no idea what happened with Xcode. I can't even assign a custom ViewController to the storyboard ViewController. I am getting the error:

"Unknown vcTest class in Interface Builder file ............ this class is not a key value, compatible with the encoding for key label

vcTest is my custom ViewController. I've seen several solutions for this in other posts, but my problem seems to be very different.

In this test app I have 1 ViewController:

import Foundation
import UIKit

class vcTest: UIViewController {

    @IBOutlet weak var label: UILabel!


}

      

        
        
        
      

    

The only ViewController in the storyboard is assigned to this ViewController, which has 1 output for the label. vcTest appears under: Build Phases -> Compile Sources. I must be seeing absolutely nothing here, or Xcode is completely broken. I even tried uninstalling and reinstalling Xcode, which didn't help .... I have another original project, I found this problem and now it even appears in this simple test app. What's going on here?

Note: This happened after upgrading from Yosmite 10.10 to 10.10.1.

edit: so this is what I have learned so far: I have somehow created one project where this is not happening in all the other projects it does. he did not specify anything special in the working draft. what I noticed between working and "code-like-like" is not the module specified in the storyboard. worker shows: Current is project_name and no worker shows None. I have added a screenshot. how can i change the model to the current model? (can't post images here link): http://s14.directupload.net/images/141119/xn8jb7cw.jpg