I am using PDFCombineProx http://www.coolutils.com/PDFCombinePro
which allows you to combine basically anything you want into a single PDF. The X extension adds
the Command Line option which I call from Aware.
You can have any number of DOC, DOCX, RTF, TXT, XLS, XLSX, HTML, HTM, MHT, PS, EPS, PRN, PDF, TIFF, JPEG, PNG. files in a folder
and it will bundle up the whole lot into a single PDF.
I Create a Folder on the server named with a unique value of the LoggedInRegularUser, Export all the files to there and then run PDFCombineProX to
generate the PDF and then copy it back into Aware.
It has worked flawlessly.
Not free but worth every cent.