Any and all,

  Upgraded to P13, I'm used to installing purchased items by opening the runtime file, libraries and drag the purchase to the appropriate file / library. P13 has a content folder. Worked through that - boot up P13 and the added purchases aren't there, so clearly getting it wrong. Any thoughts, input on how / where to manually install will be greatly appreciated.  Best of days yet at Ya'll!

If I remember correctly, if you added a bunch of things all at once, it sometimes took a while for the content to show up in the library the first time and it would look blank. But assuming that isn't the problem, can you post a screenshot of your runtime from Explorer or Mac's equivalent making sure to show us as much as possible of the file structure? 

You can also open a support ticket at: https://support.posersoftware.com if more help is needed.

That folder is labeled 'Poser 13 Content' and should appear as a separate runtime in your Poser Library.  There are 3 other associated folders, 'Downloads', 'Included", and 'Purchased'; check those folders for misplaced content before submitting a support ticket.  There is nothing wrong with the old, conventional installation method, I still do that myself.  Conduct a disk search to verify the installation and location.