How do I make an editable CPT file if my theme doesn't have a single.php?

Hey all,

First of all, everything else about CustomPress appears to work brilliantly, thank you. :slight_smile:

I'm trying to create an editable single.php file (or whatever) for a Custom Post Type. I've set the theme's folder permissions to 777 (and also tried setting them recursively within the folder), but I keep returning a copy error, and an instruction to set permissions to 777.

I think this is because my theme uses an index.php file rather than a single.php file; there's no single.php for the plugin to copy. If that's the case, how can I get an editable file together so I can embed and style the custom fields I need for it?

Working CPT post: http://sandbox.gourmetbookdesign.com/coopadopt/families/lisa-and-darrin/

Thanks!
Adam