OK, I am puzzled a bit about this so here is what I have.
I am creating a pdf via the print on an apple machine via a script. No problem there.
So it is being created properly as a pdf and is stored in a external folder via the container storage options, No problem there
I created the script to attach and email the pdf file in the external folder and it emails perfectly in FM16 A
Created the runtime and it goes through the motions no error messages, but does not attach the pdf.
The pdf file is created via the print option but the runtime does not see it to attach it.