Before I made the mistake of DLing the free (you get what you pay for) Mavericks from Apple I had no problems with any ML operations. Now, an "upgrade" later...I can't even get my CF cards to mount. They show up, but as soon as I attempt to drag and drop files, they hang up and the card is ejected. Thanks Apple. Haven't used my 5D3 in a week now thanks to this.
Any help out there? I searched for the same topic but came up empty. Apologies if this is a dupe.
What computer are you using? USB 3.0 card reader?