I'm trying to follow the instructions, "Using Dropbox with Espionage". I've moved a locked folder disc image to Dropbox and copied the password. The disk image has transferred to my other computer. On my other computer, I've unlocked Espionage and dragged the disk image to the Espionage icon in the menubar. Now, when I try to mount the disk image, I get a spinning Dropbox icon in the menubar. When I click on the Dropbox icon, the banner opens and says, "Can't sync ".Trashes": access denied.