Factorio Forums

Been lurking here for a few weeks, first post. So my research production was in order and working fine for many hours, and I returned to the base to see that blue production was clotted by a bunch of regular circuitboards in place of the line where the advanced boards should be. Hopefully this screeny works; if so, note the mixed green and purple boards:
I've no idea what happened there. This was after an extended run of base-killing and not much else. I guess it's a bug?

Save file on Skydrive: https://skydrive.live.com/redir?resid=2 ... 3039%21224

Edit: Had 8.8.0 as the version.

It's no bug, on the top in the middle you have inserter that takes both purple and green circuits from top belt and puts them down. Inserter preferentially takes items that are on the closer lanes, but when that lane runs out, he starts taking from the further. If you have more item types on one belt, use smart inserter to take only one type.

I can't believe I did that - would have sworn that was a smart inserter. *facepalm*

Thanks for the reply and thanks to the mod for moving this so quickly.