init error: file missing - cl-generic after any time I edit settings.org file

Question

I am using org mode to organize my various Emacs settings. Within my init.el file I just have (taking out initial comments):

;;; Code:
(package-initialize)
(eval-when-compile
  (require 'use-package))
(org-babel-load-file
 (expand-file-name "settings.org"
           user-emacs-directory))

My settings.org file is too long to post here, but if the details of it are pertinent I put the whole thing into a pastebin: http://pastebin.com/STkz1ADQ (The section about ein is at the bottom)

Recently (I don't know when this issue cropped up, I hadn't touched my settings.org in a while), any time I edit my settings.org file I get the following error message upon re-loading Emacs:

Warning (initialization): An error occurred while loading `/home/dan/.emacs.d/init.el':

File error: Cannot open load file, no such file or directory, cl-generic

The full debug message:

Debugger entered--Lisp error: (file-error "Cannot open load file" "no such file or directory" "cl-generic")
  require(cl-generic)
  eval-buffer(#<buffer  *load*-973163> nil "/home/dan/.emacs.d/elpa/ein-20160107.455/ein-cell-output.el" nil t)  ; Reading at buffer position 1010
  load-with-code-conversion("/home/dan/.emacs.d/elpa/ein-20160107.455/ein-cell-output.el" "/home/dan/.emacs.d/elpa/ein-20160107.455/ein-cell-output.el" nil t)
  require(ein-cell-output)
  eval-buffer(#<buffer  *load*-288601> nil "/home/dan/.emacs.d/elpa/ein-20160107.455/ein-notebook.el" nil t)  ; Reading at buffer position 1628
  load-with-code-conversion("/home/dan/.emacs.d/elpa/ein-20160107.455/ein-notebook.el" "/home/dan/.emacs.d/elpa/ein-20160107.455/ein-notebook.el" nil t)
  require(ein-notebook)
  eval-buffer(#<buffer  *load*-347368> nil "/home/dan/.emacs.d/elpa/ein-20160107.455/ein-notebooklist.el" nil t)  ; Reading at buffer position 1026
  load-with-code-conversion("/home/dan/.emacs.d/elpa/ein-20160107.455/ein-notebooklist.el" "/home/dan/.emacs.d/elpa/ein-20160107.455/ein-notebooklist.el" nil t)
  require(ein-notebooklist)
  eval-buffer(#<buffer  *load*-648891> nil "/home/dan/.emacs.d/elpa/ein-20160107.455/ein-org.el" nil t)  ; Reading at buffer position 896
  load-with-code-conversion("/home/dan/.emacs.d/elpa/ein-20160107.455/ein-org.el" "/home/dan/.emacs.d/elpa/ein-20160107.455/ein-org.el" nil t)
  ein:org-store-link()
  #[(f) "\302   \205\f

Reading through this the issue seemed to be that something weird was going on with EIN (Emacs Ipython Notebook). So I removed ein, and reinstalled it, and the issue went away.

I have to do this (remove ein, re-install ein) any time I edit settings.org.

I have no idea why this is happening - whether it's something with my setup, or with ein, or what. What is cl-generic (brief googling hasn't turned up much information)?

The compile log for ein also makes mention of cl-generic: http://pastebin.com/1zgQXvsx

Any light anyone can shed on this would be appreciated.