It's a shame such a mod has to be created - and even updated.

No problem. But yeah it's kind of.

I'm not sure why, but the only way I could get this mod to even somewhat function was if I removed every other script-related mod and even then my sims would still go to the fridge to start making the cake, only to immediately set the ingredients aside only to immediately pull a future cube from God only knows where despite not having on in inventory (they do this every time they go to make cake, at least eight times a day). A great concept, and I really wish it worked in my game, you definitely get some kudos for stepping up to the plate to work at resolving this NAP related issue.

I see. You can checkout Simvasion's mod if you haven't already, see if it alleviate the problem.

Edit: I made the commodities in question (which are believed to be stucked), non-persistent when saving a sim (Simvasion did this already), and will be automatically removed when the value goes down to 0.