I have played through this before and this didn't happen. I got to the part of the quest line where he asks you to build an ag plot. I had already skipped past the quest buildup, using the hollow tape I just started auto building my city. so I'm guessing it was because there was already ag plots down on the ground. Anyway he glitched, and even though I dropped one he wouldn't acknowledge it. I decided to just say the heck with it and zoned out, but when I landed it said the quest was completed. unfortunately it turned into one of those all of its complete, but the quest is still stuck in open. I don't know what console command to use to complete it. I tried doing SQT, but I wasn't able to get it from there.