I started using them at the end of my bus where the logistic robots take over production. That way they take the materials to a central storage right away since I don't need them at the bus.

You're welcome. I must have missed that one in my search but yes that is definitely the issue I came across. I was holding left click to drag a line of power poles when I must have right clicked one as it was placed. I just tried it now and reproduced the error exactly. Thank you for your respond.

I was in the process of moving some electric poles around with the click and drag feature when the game suddenly crashed. The error message suggested I post it in the forums so I have attached the log and save file. The save file is from moments before the crash and I don't know how to reproduce it ...