As for the rcing lavas error console log, screenshot the setup window or say which setup options - I need to test with the exact options and debug.. Using pouches? Forgot earth runes?
Just tested an inventory with earth runes, earth talisman, binding necklace and dueling ring, script worked flawlessly.
Make sure not to forget earth runes otherwise the script will not be able to craft lava runes and will just hover over the altar without clicking it.
Lava runecrafting honestly works flawlessly:
Did 3 quick inventories with no problems whatsoever
As for staminas in worker mode, they are not supported -just- yet, but I will add it for the next update (v77) today, including an update for teleporting too fast. The teleporting too fast fix will also apply to other runecrafting options - script will not try to walk out using portal if there are teleports available (sometimes happens too fast) etc.