Muhsin, this question rather belongs into the 'Starting with Gamestudio' forum.
When you run your main script, maybe the camera faces a black wall, press [0] to move the camera around (WASD or arrow keys (?) and mouse). Add a Position to set a starting point for your camera.


EDIT (regarding Muhsin's post below): Muhsin, this does not seem to be an update related problem, please post your question in the forum that I've mentioned above. Thank you!