Just updated my Galaxy S3 to the latest firmware update via Kies. After the update Android File Transfer won't recognize the device being connected but KIES will.
I've tried:
Switching from MTP to Camera.
Back to MTP
Turning off USB debugging.
Turning ON USB debugging
Rebooting phone
Rebooting Mac
Any troubleshooting suggestions would be appreciated. This is really !@#$ing me off.