Karma tests error "unable to init ocLazyLoad"

From the quickstart sb-admin-angular, I am trying to run the tests, but I get the error unable to init ocLazyLoad. (This is a Windows7 machine.)

The command I use to run the tests is:

$ grunt test --force

I understand from this thread that I must make sure that the path to the ocLazyLoad script is added in karma.conf.js.

files: [
  'bower_components/angular/angular.js',
  'bower_components/angular-mocks/angular-mocks.js',
  ...
  'bower_components/oclazyload/dist/ocLazyLoad.min.js',
  'app/scripts/**/*.js',
  'test/mock/**/*.js',
  'test/spec/**/*.js'
],

I have also tried using Bower to reinstall ocLacyLoad, as suggested in the aforementioned thread. I was given a choice of versions and selected the first option:

Unable to find a suitable version for oclazyload, please choose one:
    1) oclazyload#~0.5.2 which resolved to 0.5.2 and is required by sb-admin
    2) oclazyload#^1.0.9 which resolved to 1.0.9

What step am I missing or corrupting here, please?