Bridge not letting me view files

I just bought a nikon 750 I formatted the cd card shot a session came home loaded card into my card reader and trnsported the files to my external HD. I can view the images everywhere except in bride when i open the folder in bridge the files to show images. just file names and blank image. what am i missing here. I use bridge alot and NEED to be able to view the images in bridge. please help I also shoot RAW if that matters. i use a mac book pro operating system macOS sierra

thanks for all help. im stressing.......