Heyo! It appears that the latest changes to gun handling have broken Autodrive in my installation. Hopefully, the error is helpful. Some quick binary testing was able to narrow it down to what appears to be an incompatibility with the Planet Rubia mod in some way. This happens with the new Version 2.0.6, but not with Version 2.0.5 from what I can see.

Failed to load mods: __autodrive__/prototypes/3-grid.lua:135: attempt to index local 'gun' (a nil value)
stack traceback:
    __autodrive__/prototypes/3-grid.lua:135: in function 'has_guns_with_ammo'
    __autodrive__/prototypes/3-grid.lua:160: in function 'pick_grid_for_vehicle'
    __autodrive__/prototypes/3-grid.lua:233: in main chunk
    [C]: in function 'require'
    __autodrive__/data-final-fixes.lua:20: in main chunk

Does changing line 135 in prototypes/3-grid.lua from

      found_gun = gun_list[gun.name]

to

      found_gun = gun_list[gun_name]

fix that?

Why yes, yes it does! That appears to do the trick just fine. With that one change, version 2.0.6 works with the entire rest of my modlist.

Fixed in version 2.0.7. Thanks for the report and feedback! :-)