thanks captaincomic, i have installed the last stencyl private build and i have tried several times and my last game doesnt crash. Also when i close it , it's not running in the background so this is a major improvement, because now, it it crashes, since it totally closes you can restart it from 0. The problem before was that when it crashed and you closed it , it was still running in the background so it was not going to start again unless you went to your settings menu and manually close the process (or you were lucky).
But i have found another issue. My game size has jumped from 17mb to 21 with this new stencyl version.......
Edit: I did clean project and added chartboost and admob and it went down to 20.97 xD...i notice some size increment but not that much