Thanks ScruffR, I ready need to sort this out.I have tried all morning and cannot see how to get the option. It did appear yesterday and I don’t know what I did to get that “Add to Project” dialog to appear after clicking “USE”
I cleared out the unnecessary files from the folder and tried again but still same result
I created a new project for Photon and the library “Add” and the Serial monitor work fine.
Will try again later with Electron code. Maybe I did not open the project from file properly. Do you always need to select “Open Project Folder” before playing around with your files?