G-Technology EV Series Reader Mini Mag wont work with Macbook Pro

When I plug the mini mag reader into my new 2016 MacBook pro with a Red 120 GB card it freezes my MacBook pro finder when I try to open the card. I can’t copy files or anything. I switched out the G-tech mini mag reader for an official RED mini mag reader and it worked fine. Has RED made it so you can’t use a G-Tech card reader?