If you need to transfer files between a Mac and a Note 3, this thread explains how to do it. Works perfectly.
http://androidforums.com/samsung-galaxy-s4/719394-android-file-transfer-mac-could-not-connect-device.html#post5816172
http://androidforums.com/samsung-galaxy-s4/719394-android-file-transfer-mac-could-not-connect-device.html#post5816172