I've read that last night actually while looking for a solution, i was think i was missing something but still, its like a game glitch. Tile sets can be all X and layer priority can be set to null. Still the character can walk right though it. What i did notice in that what you said to read is something about Ghost items, but i didn't understand it and what i got was just place object that are inpassable in the areas effected, this is more of a quick solve. Thanks for the quick reply's blizzard, its good to know that your here and helping people like me.
Treign