I'm not sure if others had this problem but the map changer was not working for me...I noticed this line in sys.txt:
;content="\My Flash Disk\APL2\iGO\content"
and I changed it to:
CONTENT="\My Flash Disk\APL2\iGO\CONTENT"
I'm not sure if content really had to be all capitalized but for sure the ; before content had to be removed.