Sorry, it still crashes. I'm trying to send a mobi, not pdf.
a different issue: I have "No SVG cover" checked in epub option, but calibre still generates
Code:
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" width="100%" height="100%" viewBox="0 0 500 500" preserveAspectRatio="none">
<image width="500" height="500" xlink:href="cover.jpg"/>
</svg>
which Stanza (iPad) doesn't grok. It needs the src attribute. I know, I should stop using Stanza, but I still like it the best.