deleted all things (Qt and V-play engine) from SDKMaintenanceTool then couldnt reinstall from it.
After that I downloaded the Vplay installer again and installed first tools then start SDKMaintenanceTool and installed all things again
and now kit problem solved but I have another problem.
when I start BalloonPop on Felgo Sample Launcher, it works well however when I start a project on based BalloonPop project , the Balloon falls down 🙂
what is the problem ?
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28 PhysicsWorld {z:1; gravity.y:1; debugDrawVisible: false}
changed the gravity to -1 and solved 😀