When a scenario is reloaded, normally only the world constructor is executed (if it does not find any problems during the compiling of the scenario, and if it was last compiled at all). One way to tell if the scenario had completely compiled is to check the World class and Actor class trees on the right side of the screen. If there are diagonal stripes through any of the classes, then those classes need to be compiled (or errors need fixed in them and then compiled). Once all the classes are compiled without any issues, the world constructor will execute and load any items added within the code.
Also, actors you've added into the world manually don't get saved. You can use the "save the world" option (after right-clicking the world) to automatically generate code to add them in.
>Again, another useful tip! That will come in handy when I teach students in a few weeks time.
