Shin Megami Tensei : Strange Journey help

Hey everybody ,
I just started playing this game but when i try to save it says : Save Failed
What can i do prevent this oh by the way im using a TTDS with YSMENY

Use 1.17a12 firmware and the updated Infolib files
www.linfoxdomain.com/ds
http://loda.jp/dsm/

ok thnx