I tried again with a new project (Simple hello world) and without any ANE and I got the same error !
Any one is using FB 4.7 + AIR 14 + Android x86 (I doubt) !?
I also tried in both AIR 14.0 and the new beta and also in Mac and Windows environment !
I'm completely out of ideas and IT seems that this was not well tested with FB on my opinion.