Action Replay GBA-DS only shows a black screen when you try to play a game through it. Am I doing something wrong or is the Action Replay broken

I am having the same problem. This usually means that the Action replay is pretty much useless. It will not work anymore. Try to send an email to Datel Design with the subject STILL NEED HELP. You can find their email address by clicking the help links at this website: www.codejunkies.com