Aha! It is must better with full message!
It looks like you have a PDF library in your sketchbook, as an additional library.
Perhaps try and remove (or move elsewhere) the pdf folder in the /Users/Davidlk?Documnets/Processing/libraries/ path.
It looks like you have a PDF library in your sketchbook, as an additional library.
Perhaps try and remove (or move elsewhere) the pdf folder in the /Users/Davidlk?Documnets/Processing/libraries/ path.