First off, love this script. It's my most used one and I can generally leave it on overnight without problems in many locations.
Recently, after the latest Runemate update IIRC (when it started to drop from top-to-down instead of left-to-right), the powermining feature has started to occasionally bug out on me. Every few hours or so, it might miss a rock while drop shifting. While it is able to go back and drop the missed rocks, IF the missed rock is the last on in the inventory (bottom, right corner) the script will stop working and it will just stand there doing nothing.
Is this something you could look into and fix? Would really appreciate it. Love your work!