Game crash with error message:

Notice: Error while running event
on_robot_pre_mined (ID 15)
__robotMiningSite__/libs/control/entities.
lua:195: bad argument #2 to '__index'
(string expected, got nil)

The 2 mining sites were finished clearing out a single ore deposit, the robots were parked inside, ore was still contained within, and I had marked them for deconstruction by construction robots.

Crash occurred, when the deconstruction happened.

-- Smoov

Same thing happened to me and a friend on a multiplayer server, server crashed completely.

I was playing single-player when I got the error.

highway, when you got the error, did it happen when you were removing a site like I was? (granted, I was doing it with construction bots, with inventory still inside)

-- Smoov

I got a similar crash event with the same messages, but looks like author isn't responding to this discussion thread.

Game crashes when Construction Robots remove the mining site.
Seeing as I can't remove the site unless I select the 3x1 tower on the right side, I assume the robots are removing it with an illegal action.
This is literally the only thing preventing me from using this mod.

Should be fixed.