Default Folder X 4.6.5 is now available, giving you the ability to save a copy of a file while you’re in an Open dialog. It’s great for creating a backup copy of a document before you open it.
This update also resolves some pesky issues, the most important of which is a fix for a problem with OmniOutliner 4. Default Folder X would sometimes make OO4 freeze for 2 minutes when you saved or exported a file. This version also works around a Mavericks bug that could make Default Folder X’s Spotlight and Preview windows pop up in the middle of the screen instead of below the file dialog where they’re supposed to be.
There are a number of other smaller fixes and improvements as well – you can read about all of them and download the update from the Default Folder X Release page.