In this scene, we try to attach this script someScript to the cube. However, there will be chances that the scripts become missing when you move this scene to another location, or accidentally delete the script.
This missing Script will cause unwanted behavior.
You can manually remove the missing scripts, but you can also use RemoveMissingScripts to get this done with just a single click.
First click on the object with the missing scripts in the left window, then click CareTools/RemoveMissingScripts
This will remove all missing scripts in all children objects.
You should be able to see the log information in Console.
Check the following section
Use AttachMaterial in CareTool
Check the following section