Well, with some elbow grease I can say that this script can be made to work post-update. It doesn't seem to like the coal bag right now (misses the 'fill' option a lot), but if you disable the coal bag it will run normally.
Also, to address the glitch causing items to disappear in the bank I ended up commenting out most of the withdrawing part of the DoBanking procedure. I replaced it with a simple fix that uses static bank slots for the ore and coal. That way, it can still withdraw them even if they glitch and become invisible.
It seems that items present in your inventory at login will never glitch out in the inventory (they can still in the bank), so make sure to have at least one each of your ore, coal, and a bar present in your inventory when you log in.
Long ago, the '90s Nicktoons lived together in harmony. Then, everything changed when the century turned. Only Avatar, the best of the 2000's Nicktoons, could save them. But when the channel needed it most, the show finished. Four years passed and Mike and Bryan created the new Avatar: Legend of Korra. And although the show itself is great, it has a long way to go before it can live up to The Last Airbender. But I believe Korra can save Nickelodeon.