I have saved a number of presets such as actions for frequency separation and various tools for retouching. However, these saved items whilst they are visible in Photoshop when I go to Edit - Presets - Export Presets there is nothing there. Also I've checked my presets folders in Application Support and they are also empty!
So despite the fact that I do have presets saved and available to use with Photoshop CC 2017.0.1 I can't work out where exactly these files are being stored?
I'm using Mac OS 10.11.6 and I subscribe to the Creative Cloud.