I just got DT with the macUpdate bundle.

But how do you ad a PDF file? I’ve tried the D-n-D into inbox, today, sidbar, etc Nothing. (text files, excel files, etc seem to work)

Still trying to wrap my head around DT. Can I create bookmarks inside PDFs and call them up? Preview does this, but doesn’t offer sub folders for grouping.
I have tons of technical PDFs and its nice to just zero in to the spot inside the PDF.

Found my answers.

Had to restart DT then PDFs started working, and found how to make the internal bookmarks.