Strange prob with AR :/

[DrEaMpLaY]

Last time I have strange problem with my Action Replay CDX. In past I always used it to test/play with codes and it works as well. I talking about ech relase but i have also an orginal but without special AR card. Few days ago i tried to run game with codes. AR loads like always, I selected the codes, swap cd moment and it always freezes on swirl. When I play "without codes" or only chcnged PAL or NTSC mode it not freezes. Strange, co what is going on? I think an orginal copy of it which i tested did something to my DC, because rest of cheat tools workign good (Xploder, GS, CB). Do you have any ideas what is wrong? I made codesave with over than 400 codes for dc games by last 4 years :/