I was working on a build yesterday and saved it, I loaded it now today and all of the sudden I see barley anything of what I made yesterday and there is one brick floating in the air (which isn't possible in blockland anyway) just to clarify by the way I was using gsf ghost's terrain generator mod and was building on generated terrain. Usually this isn't a problem to save as it saves all ghosted bricks in the area.
Console log is attached