Re: Layer Comps To Files - Export error: Could not complete this operation. There are no user slices

I had the SAME issue. The reason is SIMPLE, don't know why this has to be like this and its NOT showing on Lynda's tutorials.

1. Open - Photoshop (make sure you are working the original file with all the layers, NOT flatten.)
2. Click on the menu - Window
3. Select - ¨Layer Comps¨ Also open¨Layers¨
4. Now On the Layers Panel you opened display the 1st page you would like to have as the PDF file.
5. On the Layer Comps, click on ¨Create New Layer Comp¨ (you can also rename the layer name, I best is to number it)
6. Repeat step 4, but instead of display the 1st page, display the 2nd
7. Now Repeat Step 5
8. Once you do this a few times until you reach the actual amount of X pages, Go to ¨File > Scrips > Layers Comps to PDF
9. On the Browse button, select place where you would like to save the PDF and make sure you name you file, then Click Run Button
10. Open the location where you saved your PDF. Your file should be there!

GOOD LUCK!