Hi tyv4loav4vvh
it's probably something about the lot that's making it crash which is usually hard to narrow down.
Try this:
- Create a backup of your save game
- Start the game
- Load the lot in build mode from the map
- Bulldoze the lot
- Save as immediately after a successful bulldoze
- If it saves with without crashing, you'r good to go on to 7. If not, just try again.
- Close down the game by whatever means necessary.
- Restart the game
- Load the save as save game.
- Check if the lot is now properly bulldozed and if it works.