I just started a new game (I played a couple of years ago.) I started work on a tank, and was at it for three or four hours. I was nearly done when I suddenly couldn't interact with anything. I saved the game, then reloaded that save.

When I loaded it up, the tank that was already done was only about half done. The paint was gone, half of the parts were gone. It wasn't just from an earlier point - there was no point at which the tank was in the state that it was after loading. There were parts missing that had never been removed from it originally.

Not only that, but all of the replacement parts I'd bought were gone, and yet the money I spent was also gone - and I don't have enough to replace them. It's effectively killed my progress, since I can't actually complete any contracts now.