Logs are only useful if your game crashes, you have an error on the toolkit or you get an error message in general.
Your actor not loading could be a lot of things: something is killing it, something is hiding it, it is falling off-screen due to gravity before you can see it, it's moving or something else is moving it off-screen before you can see it.
Try placing a print block, printing the X and Y positions of it in an update event, along with a "make actor active always" block. If it is constantly printing, the actor is there and you can check where it is. If it's not printing, something killed the actor.