[Documents/paint.net User Files doesn't exist?]

I've tried that and I got the window above. 

[Documents/paint.net User Files doesn't exist?]

Hi, when I try to open the colour pallet, it says it can't find the paint.net User Files and when I tried to use pyrochild's smudge tool, it crashed and said:

"System.ArgumentException: The directory name C:\Users\(Name)\Documents\paint.net User Files\Smudge Brushes is invalid."

Also when I checked my document folder, the "paint.net User Files" wasn't there.

 

Is there somehow a way for me to somehow install the folder?

Oh and this is my first time posting a topic, don't expect much