This thread is older; newer threads about scripts refer one to this site’s FAQ entry, which contains info on running a script from startup.
But, really, I could have been more explicit about what you needed to do to get it to activate upon startup, when I posted the persistent version of the script – sorry about not doing that.
I don’t see the instructions about adding the lines to startup in the original instructions above
For the record, the instructions were in the source code for the script itself, down near the end of the file.