Action replay problem SOS?

my action replay wont work on my computer it just says load failed under subscriptions and it doesn't say anything under my codes list i tried every thing i could to get it to work again ( updating, going into device manager, downloading the code manager from codejunkies.com, rebooting the action replay card,) nothing will work i even tired to download the dsi code manager even though i have the ds one and not the dsi ifinallyy whit to my grandma's house one day whit my mom in asked her if i code install it on her computer in when i did it worked perfectly noting wrong so why will it work on her computer in not mine Both computers are vista and i read somewhere that action replay don't work on vista computers but when i first got my action replay it worked fine into i tried to reinstall it again about a year after i got it andthat'ss when it started to miss up and my grandma's computer is vista too but it works on hers fine somebody please help me out (I HAVE A VISTA 32BIT AND ACTION REPLAY DS IF IT HELPS)