Lost save file after 17 hours.

I was playing M&L BIS for 17 hours with a few problems. A freeze sometimes but nothing major but I loaded up the game today and it said 'Save 1 corrupted, deleting now' What the Heck? Please can tell me is there anyway to get it back if I do something to the .SAV file or something. Any help would be much appreciated.

aw sorry man u cant take it back but if u could close the ds before its deleated when u try it it could be back to normal.it happens me when I use cheat or someting I just close the game and try again later and it works!!and sorry for your sav dat bat theres nothing u can do right now just be careful next time k?

;__;

if a game freezes while it is loading or saving, then it can corrupt your save file......that sucks.......