OS Windows 10
Gimp 2.10.6

Can any of the Code Guru fix this script, I really love this filter. Thank you in advanced!

Error while executing Elsamuko-movie-300;
Error: ( : 1) eval: unbound variable: MIDTONES

and probably this one too
Error: ( : 1) eval: unbound variable: HIGHLIGHTS

Fixed the script, sort of.
The problem is that it used Scatter HSV which isn't included in 2.10
I changed it to use HSV noise, but am not sure if the outcome looks same than on 2.8
Don't have 2.8 anymore and never used this filter so I can't tell.
This is how it looks when used on Lenna reference image. Attached the script if you want to try out.

It keeps giving the same error I mention above

Error while executing Elsamuko-movie-300;
Error: ( : 1) eval: unbound variable: MIDTONES

Worked okay on Linux.
How about this one?

Remember to run Filters/Script-Fu/Refresh Scripts after replacing the old.

Thanks it fixed the prior Error but now it shows this error:

Error: ( : 1) eval: unbound variable: ALL-HUES

Fixed it, and desaturate-luminance. Hope it works on windows now.

It was giving me another Error: "DESATURATE-LUMINOSITY". But I know that GIMP 2.10 does not have "LUMINOSITY" in Desatutrate anymore, it's "LUMINANCE". So I changed "LUMINOSITY" for "LUMINANCE" and now it worked perfectly. Thank you Nidhogg, for your time and work, you did the harder part.

Yeah, I replaced luminosity with luminance but was so excited that I forgot to replace them all.
You're welcome, glad it works.