[frabjous]

Sorry. It's very hard to write software for a platform without the ability to test it on that platform.

But Let's try this one more time.

I guess the mac syntax for mktemp is more different than I thought! I've changed the script so that it doesn't use mktemp at all. The cost of this is that if the script hangs in the middle and you have to manually kill it, it may leave behind some temporary files. You can safely delete them.

I'm still perplexed by ebook-meta. Did you check to see whether or not your version of calibre has it installed? Or what version of calibre you're using? I tried to make the script smart about trying to find it on its own--and hopefully that won't break it!

Similarly, have you tried gs -v from the terminal? What happens? (You did install ghostscript, right?)

Again, I'll swap out the attachment above.