Thanks for telling me about the update. I went ahead and installed the update. However, I am still having the same problems/issues. I have also looked over some of the other comments and suggestions from other posts.
Do you think my resolution may be too high? It is to be compressed at 300dpi as of now.
Probably more than likely an error with the Background Tasks than a resolution error or other error.
Create a File>New Book and insert the document into the Book.
From the Book panel sub menu (top right of panel) Export to PDF from here.
This doesn't use the Background Task and the PDF should genereate.