This error message occures as soon as I want to use armor

The mod Useful equipment(v1.1) (1.2.0) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event useful_equipment_bump::on_player_armor_inventory_changed (ID 36)
No character.
stack traceback:
[C]: in function 'newindex'
__useful_equipment_bump/control.lua:210: in function 'set_inventory1'
useful_equipment_bump/control.lua:177: in function <useful_equipment_bump/control.lua:138>

I found the problem
It only occures in map editor.
Is it possible to disable the character check/modifi while the map editor is open?

Can probably do that, but I'm not this mod's author. I just wanted to use it so I changed the name slightly and updated the version compatibility for 1.1.

This happened to me as well when using editor extension while testing. Crash happens when I enter into editor mode. Will be looking into the issue.

Fixed in latest release.