Comment 10 for bug 1682919

@florin 's solution of 2017-05-06 worked for me also - for the benefit of people who might be a bit stuck with implementing it - as I would have been a few years ago:

Open terminal
sudo nautilus (or whatever your file manager is - enter your admin password at prompt)

this will open your file manager with admin rights

navigate to /usr/lib/python2.7/dist-packages/PIL/Image.py

open this file with a text editor or - my preferred option - Bluefish (this means you can just enter the line number to find the bit to change)

Comment out the lines (or just copy and paste this

` """if not isinstance(size, (list, tuple)):
  raise ValueError("Size must be a tuple")
 """`

to replace the un-commented lines

Save the file

Run Phatch jut like you did on 14.x :)