The processes I have is a complicated one, so it is going to take some time to get something together for you.
Basically, I am creating a PDF from an email, detaching all the attachments, rendering what file types that I can to PDF. Then, I concatinate the PDF email along with the the rendered attachments and a "Rendering Summary" that show what was and wasn't able to be rendered to PDF. t is during this concatination whee this go bad.
I will try to build a simple model that reproduces the error and get it to you.
Kyle Peters