For me the problem was that i couldent add score to the scoretext. Later i realised that you need to put the " _root.ship.updateScore(50); " over the " this.removeMovieClip(); ". I think it is beacus when you remove it from the game you remove the commands for that Enemyship to , so the text under will never be execuded.
 "Just a race"){kind=icon}
 "Shootorial #6"){kind=icon}
 "the Flood Runner"){kind=icon}