Compilation/ possible scripting error (screen capture included)

I’m new to Unity and Unity Script.
As you can see in the image below, I get an error on a line that does not exist, which I looked up and found: Weird error on line that doesn’t even exist and the answer was: “The error it’s giving you is related to the compiled version of the code, not your version.” - Farfarer Leeds,UK.

I’m not sure how to disconnect the connection between the script and the game other than deleting the Script component from the Inspector…

My questions are:

  1. Is there a scripting error in this script?
  2. How does compilation work?

(I know the order of compilation, but In my “Assets” folder I have “Scripts”, “iTween”, “Plugins”, “Models”. Do I need a “Standard Assets” folder for this particular script to work since it contains iTween?)

Any hints or comments would be greatly appreciated.
Thanks!

The script in your screenshot is the file “playAnimation_Togggle.js”, but the error is referring to the script “playAnimation.js”