Well, I spent hours on the Mac version of DS 4.5.1.6, or something like that, uninstalling and then reinstalling those Genesis files. The Duplicat ID #s problem persists. I could not get Smart Content to work. Finally, after reading many posts on the DAZ site, I uninstalled DS, uninstalled the CMS database, uninstalled Genesis Essentials (again), removed old Preferences files, etc. I installed the latest version of DS, Genesis Essentials, the CMS database. The result? Still Duplicate IDs, Smart Content still does not work, and Surfaces, which previously worked, is now as inert as Smart Content. A lot of work and it's worse than ever. I paid for the 4.5 PRO version, too, so, no, it's not exactly free for me.