Unity 5 assetbundle Java.net.UnknowHostException

Hi everyone, Here's my problem :

I'm using assetBundle on unity 5 and I try to load an entire scene from a web server in runtime in android. I've made it with this script : https://github.com/JiYongYun/Unity-5.0-AssetBundle-Demo/tree/master/demo

Everyting works fine if I test the project in unityEditor (with android builder) with my assetbundle on my AWS S3 server.

• I have a crossdomain.xml in utf8 in my server

• The android manifest has a INTERNET,ACCESS_NETWORK_STATE permission

• The master file of my assetbundle is named ANDROID (which contains all dependencies informations) without any extension (don't know why...).

But when i build the solution in a apk and open it in an android device, i have this error : Java.net.UnknowHostException : myurl

• Of course, internet is opened on my device ;)

Any suggestions ?