It's trying to read that byte as both a required item and required status. Attached is a fixed version.
Thanks for helping work out the kinks! I expected Libre/Open Calc to be 10% of users instead of 75%, I'll try to optimize better in the future.
Seems like you can't set requirements for RSM?
Yes, everything from Potion onward is not really functional. They are there for my own ALMA purposes: currently if you add Vertical Jump4 to, say, Battle Skill, it shows up buggily. I want the ability to make sure these abilities never appear at all if so desired, so they can be used as passives.
You should still be able to set required RSM for skills as in the old ARH though, that's unaffected.