i've tried all the Loco, Hico, ISO. I have cards that work and read just fine. I can Erase the cards. I can write the cards. Says OK. Error then on read of card. Can even take a track 1 and track 2 existing card that reads fine. Write Track 2 successfully. Then read and Track 1 reads successfully and Track 2 errors Not intuitive and hoping for an answer here so I can move star rating up.