The RP script is definitely bugged and don't leave dp. To fix that I downloaded the EK script and changed it to RP, worked normally.
To others having this issue, you might have more potions than what you put in your config, or you have the backpacks wrong. Reminding that the normal backpack is actually brown backpack.
Anyway, download the EK script and change it's settings to your vocation, works perfectly.