[yusei]

change your line

#include <streamer>

by :

#define SELECT_OBJECT_PLAYER_OBJECT 10
forward OnPlayerEditObject( playerid, playerobject, objectid, response,
Float:fX, Float:fY, Float:fZ, Float:fRotX, Float:fRotY, Float:fRotZ );
forward OnPlayerSelectObject(playerid, type, objectid, modelid, Float:fX, Float:fY, Float:fZ);
#include <streamer>