It looks like the xml of the craft got corrupted without him changing the files. He had the black planet in the main menu and persistent parts in editor (I've seen that many times while experimenting with the xml)
@AndrewGarrison I've never reported this before because it was always caused by changing game files, but if this happens in stock game it may be problematic, since it's a hard to fix bug that can cause it to break and need to be reinstalled
It looks like the xml of the craft got corrupted without him changing the files. He had the black planet in the main menu and persistent parts in editor (I've seen that many times while experimenting with the xml)
@AndrewGarrison I've never reported this before because it was always caused by changing game files, but if this happens in stock game it may be problematic, since it's a hard to fix bug that can cause it to break and need to be reinstalled