Why doesn Action Replay DS work?
I have an Action Replay DS and a DS Lite. I think that the Action Replay that you have might be broken. My first one I got wouldn’t work (with the same problem as you) and it crashed my DS. I called the company and never got a response but luckily the store I bought it from replaced both my DS and my Action Replay because they were both under a warranty and I had literally just got them the day before. I figured I would give the Action Replay one more try and I it worked. I would see if the store will take it back and replace it since it is faulty. The costumer service for the Action Replay is HORRIBLE! They never respond back if your product doesn’t work (which is 35% of the time!).