Wow, I think I touched a nerve 🙂
When I added the Duplicate command in Default Folder X 4.6.5, I took the opportunity to update the command keys to follow what Apple currently does in the OS X Finder. In the Finder, cmd-shift-D goes to the Desktop and cmd-D is used for the Duplicate command. Everyone will want things to be consistent between the Finder and the Open/Save dialogs, right?
We’ve gotten a lot of hate mail from Default Folder X users in the last 24 hours, asking (with various levels of politeness) why we changed their workflow. Umm – cohesiveness of user interface? OK, maybe not, then. Since this change has made a lot of people angry, I’ve removed cmd-D from the duplicate command and made it so both cmd-D and cmd-shift-D take you to the Desktop, and re-released Default Folder X 4.6.5. To get this change, just re-download Default Folder X and reinstall it.
For those of you that actually want command-D to invoke the Duplicate command like it does in the Finder, you’re going to have to suffer with a little dissonance in your user experience. Sorry about that.