The files in the Copy Bundle Resources appear as
![enter image description here](https://i.stack.imgur.com/HO1yy.png)

instead of
![enter image description here](https://i.stack.imgur.com/yEfCQ.png)

Sometimes, I hence have the error : 

```
-[NSWindowController loadWindow]: failed to load window nib file 'Document'

```

but I managed somehow not to have it anymore (I don't know how I did).

I think my problem somehow comes from the fact that I tried to have a French application. I created a `fr` localization and then deleted the `en` localization.

If anyone has a clue... Thanks !