"Could Not Read Data Please reinsert Game Card"

That message pops up when I start a few NDS roms. Ninja Gaiden And Professor Layton etc can someone please help me on fixing this. And I downloaded the 1.6 for my M3 Ds Simply.

im having the same problem for lost in blue 3, ( but have played assassins creed ) anybody have any ideas about what this could be? ;Dedit: just checked sticky, but re-downloading just incase download messed up.. hope my card will work ( m3 simply )extra edit (heh) : where did you get 1.6 software for yours? all i can find is this System v1.13 - (Console software- English version update)
linked from the m3 mainpage ???extra extra edit (meh): that 1.6 is the moonshell software as far as i can tell probably wouldnt affect rom play as far as i know

wasn't going to do another edit so here goes. i downloaded the right files and it now works :) ill grab link for you
since you got the moonshell files ill assume you know what your doing
http://www.handheldsources.com/M3DS/Download_M3DSS.html
System v1.13 - (Console software- English version update)
thats the one you want(moonshell is just media player)have fun! time for survival! ;D

Thanks. I'm downloading now due to the fact that my sister was on earlier. Let's hope this work.
Edit: YES it works!!! Thank you so much mate, you solved alot of my problems.

Also you could need to Arm7 patch it.