Thats just the logs from starting the script.
The issue is that if the mirrormode client tells my script that there are no more rune arrows in your inventory the script will then think that you are out of items to alch. What you describe and the logs you posted in an earlier comment just tell me that my script works exactly as it should, just the client is giving it wrong information.
Its a known mirrormode issue that sometimes it wont properly recognize whats going on ingame. And if you say that other items work fine that just confirms that its a mirrormode client issue because the script doesnt treat the items you want to alch differently. These mirrormode client bugs can be fixed either by restarting the client or sometimes just by relogging and restarting the script.
I wish I could tell you something different, but mirrormode is simply known to have these kinds of issues sometimes and only the mirrormode client developer can improve that.
As far as I remember the developer said that these issues are just a byproduct of how the mirrormode reads the game data from the official client and there will likely always be some small issues.