Hi, I just got a new Macbook Air 13'', I am new to mac OS so I dont know what is going on. I tried to copy the pictures I downloaded from my SD card to my mac, and then to a pen drive, but it wont copy all the files. I can view all the photos in my mac, so I know they are not corrupted or broken, but even though it selects all of them, I wont paste all of them, does anyone know whats going on? What am I doing wrong here? Here is a print screen of what is happening.