It's working perfectly for me. If you open the console and read any errors which are logged, it should tell you what's wrong. Chances are you've configured for too many invo slots (i.e the number of potions + runes + food is more than 28) so the script shuts off. I plan to release an update soon which will fix this by automatically adjusting your inventory to the required size, but for now you'll have to do the maths manually! x)
apa
Also, for potions, they must be (4) for the script to find them.