Can't start Cubase properly


I have a lot of troubles with my newly acquired Cubase Artist 6 (for mac).

Installation seemed to go fine, but upon starting the application, the first thing i noticed was that pop-ups (like the ones reminding you to activate your product) didn’t go away after clicking the desired option. I had to mark my answer and then press Esc.

In the program itself, the main window doesn’t seem to update what I am doing. When i add a new track, it does not appear. When pressing play, nothing happens. The output is properly configured like it was in earlier versions of cubase.

Anyone who knows where I should start solving these problems?