Hello,
I think I found a bug. Construction Drones wont build my blueprints. Debug Mode says "no eligible character with item?" in a loop for ever. Only sometimes one or two Drones launch to build something.
https://paste.pics/7ETXF
I'm not that much into scripting to find it out on myself... maybe you can have a look.

I deaktivated all other mods and made sure Drones are allowed to operate. Deconstructet all Ghost-Entitys that I don't have an Item for in my Bag. I have on my Testmap ca. 5500 ghosts. They still won't construct my blueprints.
Am I doing someting wrong?

can you provide a save game?

sure. It's nothing special. Just a 10 Min old Testworld.
https://drive.google.com/open?id=12n_zhAfkN2rPFWgLm-__PRe_0sLpLK7X

Does it still happen in the latest version?

I didn't see a changelog, so I downloaded both versions and did a diff:

```--- Construction_Drones_0.3.0/data/units/construction_drone/construction_drone.lua 2019-11-30 21:10:06.000000000 -0800
+++ Construction_Drones_0.3.1/data/units/construction_drone/construction_drone.lua 2019-12-12 19:01:56.000000000 -0800
@@ -436,6 +436,7 @@
proxy_chest.collision_box = nil
proxy_chest.inventory_size = 4
proxy_chest.order = "nnov"
+proxy_chest.next_upgrade = nil

local beam_blend_mode = "additive"
local beam_base =
```

What does this change do?

There was a bigger update just before that small bug fix