The recent RuneMate Update might have broken the script.
I'm getting this error:
00:03:53 WARN    Failed to select SpriteItem(name:Knife, quantity: 1, index: 1,  origin: INVENTORY)
00:03:53 WARN    Failed to find or select SpriteItem(name:Knife, quantity: 1, index: 1,  origin: INVENTORY) or...