adding a webview causing a crash

Hi I have a very basic app at the minute. There are 3 web views. When there is wifi from the start all three web views will load fine. I have a check in my code where the webview is only added if there is an internet connection. If there isn't, I add a label explaining to connect to the internet and a refresh button. When i click the refresh button, the adding of the web view crashES the app. Code works in iOS, not android. Using SDK 3.2.3. Code below:

refresh.addEventListener("click", function (e){
        if(Ti.Network.online){
            console.log(" here 1 -----------");
            Navbar.remove(refresh);
            console.log(" here 2 -----------");
            self.remove(NoInternet_view);
            console.log(" here 3 -----------");
            self.add(shopWebView);
            console.log(" here 4 -----------");
        }   
        else{
            alert("An internet connection is required");
        }
    });