I've been using this all day and its amazing. You can use it for anything, High Scores, Character position, saves, etc. Quite nice. I love your behaviors because you always go the extra mile for customization.
I think your RPG Elements kit are still bugged (at least the ones on the forge are) that UnusualCadence reported
Here is what i've found
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Damage Type Modifier (319) - Missing ;
(Damage Type Modifier Behavior at the Check Timer, Otherwise section. Custom Block "Get Item" is pulling as an attribute instead of as a block)
Health (121) - Missing ;
(Health Behavior in the Inflict Damage, specifically the if statement of "Absorb Damage and Damage type to asborb contains Damage Type" is attempting to produce "If inventory of self is full" boolean)
Experience (342) - Missing ;
Equipments (222) - Missing ;
Equipments (227) - Missing ;
Equipments (232) - Missing ;
Equipments (462) - Missing ;
Equipments (467) - Missing ;
Equipments (472) - Missing ;
Damage Type Modifier (319) - Unknown identifier
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I stopped after the first two, they all appear to have a root cause of your inventory behaviors. Looks like you may have changed the output your custom inventory blocks recently?
--Edit-- Also was looking at your time behavior. Think you could sneak in a toggle for displaying Hours as well?