To include graphics, I drag a pdf file into Scrivener. The MMD to LaTeX to PDF route works fine. But after closing and re-opening Scrivener, the same actions lead to a fatal pdfTeX error:
Not a PNG file, no output PDF file produced!
The document.tex folder contains png files, which are perfectly viewable in OS X Preview.
Until now my solution was to drag the original image.pdf file back into Scrivener, but as I’m working on a document with multiple graphics now, this has become irritating.
So, what happens to the graphics files in between closing and re-opening Scrivener, and how can I prevent this error from occurring?