You made the map with SBTools, Right? Then you must do the following to load a map:
'Variable that hold the map info.
VAR ARR[0]
'Change the background dimensions for layer 0
BGSCREEN 0,127,127
'Load the map and save it on ARR.
LOAD "DAT:MAP_MOTHER",ARR,0
'Load the content of ARR on the background.
BGLOAD 0,ARR
1そうだね プレイ済み