Hi Nikki, we've discussed this heaps of times. Did you actually read the "READ THIS FIRST" post before posting?
http://ask.damiensymonds.net/topic/107-read-this-first-posting-guidelines-and-download-files/
I don't know either, but that's definitely what you have to sort out first. Your action has no chance of running if the plug-in doesn't exist properly.
Are you sure you followed the plug-in installation steps to the letter?
Remember that Andrew Rodney's credibility is extremely limited, since he preaches wide gamut editing.
http://www.damiensymonds.net/2014/06/the-wide-gamut-myth.html
I definitely agree with this points about the shortcomings of CMYK. But to suggest that LAB is the solution is nonsense. If you must use numbers for skintones, just use the RGB ones you already have.
http://www.damiensymonds.net/2010/02/editing-skintones-in-photoshop-elements.html
I urge you to avoid using numbers altogether. It's photography, not mathematics. LOOK at the photo.
If you need help looking at a photo to see what the skin needs, feel free to post it here so I can help you. And I almost guarantee I'll help you fix it with the use of Photo Filters.
A bit more reading:
http://www.damiensymonds.net/2010/02/skintones-why-so-hasty.html
http://www.damiensymonds.net/2015/07/creamy-silky-perfect-angelic-skin.html
http://www.damiensymonds.net/2013/02/using-photo-filter-layer-to-fix-casts.htm
Well, the first step is to take a suitable photo of a whole bunch of pink and white balloons. Have you done so?
But gosh, even if you take a perfectly-assembled, perfectly-lit, perfectly-angled photo of the balloons, the translucent bits of her skirt are going to be demonically hard to mask.
I'll be offline for a while, I'm afraid.
Try a Channel Mixer layer:
Red 0, +85, 0
Green 0, +100, 0
Blue 0, +130, 0
Fiddle with those values and see if you can get close. If it's not good enough, I'll be back to check this thread later.
That stops TODAY. Have some pride in your prints.
Now that we're looking at the 100% crops, can you see the problem?
http://www.damiensymonds.net/2010/07/raw-noise-removal.html