If your player doesn’t render... first check that your player is set correctly: graphics form all frames of all animations, then the object details “player” and “persistent”, a bounding box.
Also, check your Sprite Zero settings (in Hud & boxes), it has to Ben set even ignorance you don’t use it.
It should be set like this: http://nesmakers.com/viewtopic.php?p=10483#p10483
(Don’t forget the colored sprite in your tileset)