My ar dsi thinks i dont have a game inserted and says please make sure your GAME CARTRIDGE is inserted into your Action Replay before continuing

SOURCE: AR says 'insert game cart', when a game is already inserted...

I have this problem too and I am trying to find a better way to fix this, but here's a simple solution so far:

1. Put in your AR and go the the code menu for you game.
2. Select any codes you want to use.
3. Take out the AR and insert the game.
4. Press the START icon that should now be showing.

NOTE: If the game being played is reset or you used Soft Reset the codes turn off.

SOURCE: AR says 'insert game cart', when a game is already inserted...

Change the way the cart is facing to diagonal.
It works for me

SOURCE: my action replay DSI says my ds game is not

Mine says it can't access the game memory when i try to play but my game works fine

SOURCE: when i put my action replay in my dsi it says there is no game.

it must be because the game cartridge is dirty. It happened with me too. First, try to blow out the dust in the action replay and the yellow data part of the game cartridge. Then if that doesn't work when you plug it in, try to wet it. Use rubbing alchohol with a tissue or an alcohol swab and rub the yellow data part of the game cartridge. It's ok, it won't get destroyed. Since data streams can be cleaned without the use of water and using alchohol cleans it. I used it on my Super Monkey Ball Touch & Roll and it was dirty because I didn't use it for a long time. Then, I wiped with an alchohol swab. After that, I put it in my Action Replay and it went to the codes already.

SOURCE: When I insert My datel

Make sure that you have a Nintendo DS cartridge connected to the Action Replay.