Check After Effects > About After Effects to see exactly which version of AE you are running. What does it say?
Yes, that's the latest version. Is there a "New Comp from Character Animator Recording.jsx" file inside the Scripts folder next to the AE app?
If not, I can't think of why, but reinstalling AE should put it back there again.
I reinstalled - and it showed up - simple as that!
Still a mystery to me why it wasn't there.