DS help

i got NoSgba emulator for the DS but it won't save... there is no save option on the emulator.. and when i wanna save in the game it says its corrupted

Go into Emulation Options, and change the nds backup type until you can save. Make sure to save your settings. OR just search the Forums for no$gba 2.6a, it has an Auto save type which will automatically choose the correct type for each one.