Sorry about all the reports these last couple days.

This time, I've fiddled with the chest sizes to get something I prefer shape-wise.
In doing so, I ended up changing the amount of slots in a Gold Chest from 80 to 81.
I had one Gold Chest in my world. forDataFixing was set to true by default when I installed the mod, and leaving it on true didn't help- world still crashes when I try to click the chest.
I tried toggling it to false in the config, starting the game, loading the world, opening the chest, and crashed again. Then I toggled it back to true from the main menu's mod config menu, reloaded the world, opened the chest, and crashed again.

Am I doing this wrong? I'm not certain what it means by "Toggle this between true and false to force runs." Should I do that from the mod menu? From in-world? Should I reload the game between turning from false to true or true to false? I must be doing SOMETHING wrong because it isn't fixing anything. Unless it just doesn't work if you change the physical size of a chest?

Oh. Okay. Got it to work after a few more attempts.
For future reference in case anyone else is having trouble getting it to work...
What you need to do is:

1. Enter the world with it set to True
2. Exit the world
3. Enter the world with it set to False
4. Exit the world
5. Enter the world with it set to True

(Optional? Did anyway for safety's sake)
6. Exit the world
7. Enter the world