Action replay When actionrreplay is in the DS, and you insert the game card, it says "Insert game card"-----nothing happens.Games work without actionreplay inserted.

I had that problem but I found that it was because I pulled out the AR and put the game in too quickly, I went slower and just pulled the AR out slowly and put the game in just as slowly, and it recognized the game, first time, everytime... and there was once where that happened but I didn't know what to do so I just put the game in a couple times and on the third, it worked

Have you tried inserting the game while the DS was off? I too find that the Action Replay doesn't recognize when you insert a game while the AR and DS is on. So you may just need to turn off your DS, insert the game, and then turn on your DS and activate the codes