I'm not sure if this is an issue with the VoidsWrath packs that have Adventure Backpack 2 or something else but on both Crusader Craft and Crazy Craft I have been unable to craft the backpack, neither has the other person with me. Looking in the adventurebackpack.cfg file I see no option to turn it off so I'm not exactly sure what's wrong, they all show up in NEI just the standard isn't craftable for some reason.

Nevermind, got it working by deleting the mod and putting it back in. The pack itself had a few other problems but I thought this one was with the mod for some reason, turns out it wasn't.

can you list the one's that are not craftable?