Have you figured out how to remedy this? I am not very computer savvy and have been losing my mind. cards in both slots on my xt3, were not able to be read by the mac (recently updated to catalina). Opened fine on an old PC; tried formatting the cards and few sample shots are obviously not working. Thought maybe it was my sd cards somehow got damaged but came across these forum. Please help a very non computer savvy person who just wants to be able to use my xt3 again and open my pics/video with my mac
