QTR-Quadtone RIP

I tried it but it didn't work. I got this error message:

Error 8800: General Photoshop error occurred. - The command "<unknown>" is not currently available. Line: 893 -> doc.activeLayer.applyAverage();


--- In QuadtoneRIP@yahoogroups.com, "Terry" <TerryGls@...> wrote:
>
> Is anyone else using ChartThrob and a flatbed scanner to Linearize the ink curve?
> 
> http://www.botzilla.com/blog/archives/000544.html
> 
> Terry
>