DwgToPDF is the old one. I believe that it was created by Autodesk and has never been updated. The Publish command apparently is newer, or at least operates differently. I have Adobe Acrobat installed, so I can print using their current version and do edits etc. but with images I sometimes have to use the old DwgToPDF also.
Steve Please use the Accept as Solution or Kudo buttons when appropriate
Hmm, I was not aware there was a difference. Typically I use the publish command with layouts specified to use the named plotter, which I have set to DWGtoPDF. Apparantly I've always been using the old driver. It's never given me problems. I have tried adobe's driver, but ran into issues. DWGtoPDF has been solid for me.