WebView with QtQuick2

[c1223]

can't seem to get a WebView working with QtQuick 2. The error is

objc[71279]: Class QNSListener is implemented in both /Qt5.1.1/5.1.1/clang_64/plugins/bearer/libqcorewlanbearer.dylib and /Qt5.1.1/5.1.1/clang_64/plugins/bearer/libqcorewlanbearer_debug.dylib. One of the two will be used. Which one is undefined.

I'm compiling on 64-bit Mac OSX running 10.8.4.

The QML is:

import QtQuick 2.1
import QtQuick.Controls 1.0  
import QtQuick.Window 2.0
import QtQuick.Layouts 1.0
import QtWebKit 3.0
 
        WebView {
           id: oauthWeb
           url: "https://www.google.com"
        }

import QtQuick 2.1
import QtQuick.Controls 1.0  
import QtQuick.Window 2.0
import QtQuick.Layouts 1.0
import QtWebKit 3.0

        WebView {
           id: oauthWeb
           url: "https://www.google.com"
        }

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I've also included QT += widgets network webkit webkitwidgets and CONFIG += x86 in the PRO file.

Can't quite work out what is happening. The webview doesn't show at all.