issue when compiling ionic app with Phonegap Build: black screen

I have just compiled for the first time my Ionic app on Phonegap Build, then I installed the app on my Android device : Samsung Galaxy SII i9100, with Android 4.0.3.

But I get a black screen:

<ion-nav-view></ion-nav-view> is empty.

I put the config.xml file in the www folder.

The app works well in my desktop browser.

Can you help me figure this out ?

Thanks

Before Cordova 2.3.0, the Connection object existed at: navigator.network.connection.

To match the spec, this was changed to navigator.connection in 2.3.0.

navigator.network.connection still exists, but is now deprecated and will be removed in a future release.

Instead of navigator.network.connection.type, it should be navigator.connection.type

So, change

var networkState = navigator.network.connection.type; 

to

var networkState = navigator.connection.type;

Hope this helps. And if it doesn't please edit your question and post your whole log again, if that wasn't the complete log.