easiest way to fix this issue is to open a windows browserr window to the runtime you are looking to add, as you have your daz directories selection window open too so you can follow the path in your directory selection exactly to the folder that holds the runtime folder.  then after you do that run a search for content in DS4 and it should start recognizing things once it's done.  and any folder that you have runtimes in on the drives you search, including test setup folders will show up and you can then remove any that don't have content from your directory