Hi there, I know this topic was posted a while ago but I had the exact same problem and found a solution. Forgive me if this has already been suggested in the thread (I didn’t have time to read everything).
All I did was this. I put the card into my mac and went to transfer. I wasn’t able to view or transfer the clips (as was the case with yourself). Normally you would eject the card via finder before removing the card from the mac but I tried just pulling it out without properly ejecting it. I obviously got the message “the device was removed incorrectly etc.” Then when I put the card back into the EX3 it gave me the option to “restore media” (an option it wasn’t giving me before incorrectly pulling it out of my mac). The media was restored and I was able to transfer it from the card like normal.
Hope this helps anyone who encounters this problem.