Hey why don't these work?

It seems that almost every DS game I've uploaded to my DS Xtreme card lately won't work. It's always the same problem: "save date could not be read/found"Any idea what's causing this? Some games don't have that problem, but many do. Any help is greatly appreciated here.

this should be in technical help, moved.Have you updated your firmware?

You'll need to update your firmware at http://www.linfoxdomain.com/ds/.