A great mod, unfortunately the last update broke my save:

The mod Transport Drones (0.7.6) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event Transport_Drones::on_configuration_changed
Unknown item name: coke
stack traceback:
Transport_Drones/script/depots/buffer_depot.lua:396: in function 'get_current_amount'
Transport_Drones/script/depots/buffer_depot.lua:153: in function 'update_contents'
Transport_Drones/script/depots/buffer_depot.lua:611: in function 'add_to_network'
Transport_Drones/script/depot_common.lua:492: in function 'on_configuration_changed'
core/lualib/event_handler.lua:87: in function <core/lualib/event_handler.lua:84>
stack traceback:
[C]: in function 'get_item_count'
Transport_Drones/script/depots/buffer_depot.lua:396: in function 'get_current_amount'
Transport_Drones/script/depots/buffer_depot.lua:153: in function 'update_contents'
Transport_Drones/script/depots/buffer_depot.lua:611: in function 'add_to_network'
Transport_Drones/script/depot_common.lua:492: in function 'on_configuration_changed'
core/lualib/event_handler.lua:87: in function <core/lualib/event_handler.lua:84>

Nevermind, due to some conflicts while updating Factorio disabled Krastorio 2 (along with a few other mods like Alien Biomes) and after the next update round I didn't notice that and thus they stayed switched off.

After toggling everything on again, Krastorio 2 and the Drone Mod family work happily together again :)

Thank you for your work!