would be nice to use these for unpacking parts instead of the big machines. :-)

I can change the crafting category to stacking perhaps

Version: 0.4.20
Date: 2021-01-14
Changes:
- Added setting to pack rocket section in beltboxes.

I have it enabled in options but still unable to feed cargo rocket sections into the beltboxes (or existing packed sections via Assembling Machine) into the boxes to unpack. Is there something else I'm missing?

can you use the prototype browser to look at the rocket packing recipe, and check what it's crafting category is?
also, what other mods effect it after mine.

This was my save's screenshot: https://i.imgur.com/EUbP4n9.png

FNEI doesn't show made in beltboxes like the other intermediates either. Nor is it listed in research.

Also, just in case it was a conflict as I'm running a lot of mods, I tried it on V453000's minimal SE only game. ( https://imgur.com/a/LdR58ep )
I sync'd up his save and used only the mods he listed and added 'Deadlocks beltboxes and loaders v2.4.1', 'SE Bridge v0.4.23' and FNEI which even with rocket part override enabled didn't show anything.

Hope this helps, (or something stupid I'm not seeing).

If you wanted to know why it wasn't working:

{
type = "string-setting",
name = "ds-se-stacked-rocket-parts-override",
setting_type = "startup",
default_value = "disable",
allowed_values = {"disable", "enable"}
}

if settings.startup["ds-se-stacked-rocket-parts-override"].value == "enabled" ...........

Quick correction later and it works as expected.