GalaxyCat wrote:
I think you might consider ejecting your SD card in the software BEFORE you eject out of the hardware. But as long as it is not writing or reading from the SD, it might not matter. On my MacBook Pro, I have rendered an USB memory stick unusable because I didn't eject in the software first, and it corrupted the USB memory stick permanently. At least that is why I think it stopped working.
Have you tried using disk utility to repair the usb memory stick? If the MacBook Pro recognizes that there is a usb drive in the computer, disk utility should fix it.