Sorry... I wrote it a while ago & the engine has probably changed in some way since I wrote it. There's another method you could use that doesn't involve animations at all.
Use a value to store the score in. You can also increment it as needed to via action parts. Now you can display the score inside of a display narration text action or a display object text action or you could even directly write the text on the screen with the new Lua draw functions that were added to VS 4.2.5.
Please check out the
about display text related page found in the manual section of the wiki.
In regards to your video, it seems the script is not controlling your animations. Are you sure you linked to the correct animations? Correctly followed the instructions on the wiki page? etc... I don't remember if I included a ved demo in the resource section of the page? Probably not though as I tested the script out in the Zak 2 ved.
Anyway... hope you manage to resolve the issue. It's a bit late here at the minute for me to do anything (3:16am).
P.S: have you checked the log for errors / warnings?
P.P.S: welcome to VS. Happy developing.