I have a directory of about 100 PDF files (of Autocad drawings). When I highlight them all, then right click and select print, only about 10 or so drawings actually print. When I tried opening all of them up in Acrobat Reader, it only allowed 20 of them to actually open (I did not know Acrobat reader had a file open limitation). Do I need additional software to be able to print them all out at one time? Or, just a different way of working with them? Thanks, Stephen R.