piffpaffpuff/woocommerce-delivery-notes — pull request #82 by joshlevinson (2014-06-25 20:22:39+00:00)
Title: Allow orders with any post status to get pulled

This was causing a client of mine to have his orders pull a white screen when trying to print.
Did you specifically desire to only pull orders with the publish post status?
If not, this worked for me.