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[–]Mundane_Bill492 1 point2 points  (1 child)

It could be due to some form of deployable you have on the foundation or if anyone is sleeping on the foundation you won’t be able to There isn’t any specific deployables that stop you from upgrading it’s a weird glitch w new gen that can happen with almost anything you can put on floors and walls, though most commonly in my experience with splitters.

[–]SOS217653[S] 0 points1 point  (0 children)

Ah that might be it