Call of Duty - World at War doesn't start

When i open Call of Duty - World at War, the game starts to load but before it gets to the main menu a box appears with a message saying "The save data could not be accessed. Please turn the power off and reinsert the DS Card". does anyone know why this is happening and do you know how to fix it??? :(

Update your firmware at http://www.linfoxdomain.com/ds/. If emulator, like no$gba, search forums for 2.6a, the save type in Emulation Options will be set to Auto by default.

Hi having same problem looked on the site suggested but still very confused.We have a m3 simply cannot tell what version though?
Any help welcom thanks

Ater reading some of the other post on the site ,yes we all are not computer buffs, i decided to wing it and download what i thought was the right file.Very pleased with myself and for polite posts that understand we are not all computer buffs.
Thanks to http://www.linfoxdomain.com/ds/.