Same thing for me, I've tried in 3D and 2D games but it always crash in loading snapshot. I believe that it's an emulation issue, NDS emulation development is still not finished...
what do you mean by snapshot? do you mean the save file that is generated when you use a save point in the game? or do you mean like a RTS type thing with a memory dump?
While I know you mean in case of someone confusing schooling establishment from shooting establishment (many of the same letters) I am still going to read that as lockdown (also known as lock in) for a pub
being drunk in school was either because drunk on playing field or could not be arsed with one particular Thursday afternoon so went and had some beers and played some games instead before returning for an ill advised last lesson/period