OK! So, tracked down the problem. I had uploaded an image into the “Folder” and then used a link to that image within my Sales Order using the image custom field.
Actually I had seen someone suggest that method in the forum and hence tried it. Unfortunately for me, it gives an error when creating a pdf or when I try to send an email.
Took out the link to the image and pdf and mails started working again.
Actually, I thought the topic you referred to was from someone using Windows. If I recall, he did it successfully, although he jumped through many hoops to do it. I only know it doesn’t work on a Mac.
At any rate, the point was never to encourage users to store images in accounting files. Imagine someone wanting photos of 1,000 inventory items and getting out their shiny, new 20 megapixel camera to attach a lot of high-resolution pictures. The file size would really get big in a hurry