Double Bug Report

1)
If you are loading a save, you are able to rebuild where theres already built structures

2)
Tried to erase one on my save because my game wasn't over yet, and i wanted to play an another game
Failed to allocate memory
Crash
Restarting game
Can't load my save because it has dissapeard

Dark magic >:(

It was probably because ive pushed my game too far, is there a way to allocate more momery to the game to prevent that problem happening again ? :d
Ive got 32Gb, i don't think my game even used 8 :d