Lol this has to be one of the most unexplainable things ever. Ok here it goes. Im using a CBS battle system (Which shudnt Matter)... Whenever I make a map using the Forest Exterior tileset and then testplay it, my character cannot move when he enters the map...when i press the arrow keys he just turns to that direciton.... I thought it had something to do with maybe some terrain tags or somethin...it doesn't. Its a default tileset. So i decided to try the same tileset on a different project that isnt using the CBS. It works! i tried to copy and paste the map i make on the new project to my main one and Boom....still nothin. Its relle weird, he is still mobile cuz he turns around and stuff but he just doesn't move... Help...im using rmxp.
Check your tileset again, but this time check for passability rather than terrain type.