[FINoM]

karma start test/karma.conf.js
WARN [plugin]: Cannot find plugin "karma-babel-preprocessor".
  Did you forget to install it ?
  npm install karma-babel-preprocessor --save-dev

Вот такую ошибку получаю, пытаясь запустить Карму. karma-babel-preprocessor установлен.

Полный текст karma.conf.js

// Karma configuration
// Generated on Sun Aug 16 2015 13:55:06 GMT+0300 (EEST)
module.exports = function(config) {
    "use strict";
    config.set({

        // base path that will be used to resolve all patterns (eg. files, exclude)
        basePath: '..',


        // frameworks to use
        // available frameworks: [url]https://npmjs.org/browse/keyword/karma-adapter[/url]
        frameworks: ['jasmine', 'requirejs'],

        plugins: [
            'karma-babel-preprocessor'
        ],
        // list of files / patterns to load in the browser
        files: [
            'test/test-main.js', {
                pattern: 'test/src/**/*_spec.es',
                included: false
            }, {
                pattern: 'src/**/*.js',
                included: false
            }
        ],


        // list of files to exclude
        exclude: [],


        // preprocess matching files before serving them to the browser
        // available preprocessors: [url]https://npmjs.org/browse/keyword/karma-preprocessor[/url]



        // test results reporter to use
        // possible values: 'dots', 'progress'
        // available reporters: [url]https://npmjs.org/browse/keyword/karma-reporter[/url]
        reporters: ['progress'],


        // web server port
        port: 9876,


        // enable / disable colors in the output (reporters and logs)
        colors: true,


        // level of logging
        // possible values: config.LOG_DISABLE || config.LOG_ERROR || config.LOG_WARN || config.LOG_INFO || config.LOG_DEBUG
        logLevel: config.LOG_INFO,


        // enable / disable watching file and executing tests whenever any file changes
        autoWatch: true,


        // start these browsers
        // available browser launchers: [url]https://npmjs.org/browse/keyword/karma-launcher[/url]
        browsers: ['PhantomJS'],


        // Continuous Integration mode
        // if true, Karma captures browsers, runs the tests and exits
        singleRun: false,

        preprocessors: {
            'test/**/*.es': ['babel']
        },
        babelPreprocessor: {
            options: {
                sourceMap: 'inline'
            },
            filename: function(file) {
                ds
                return file.originalPath.replace(/\.es$/, '.js').replace(/\/src\//, '/js/');
            },
            sourceFileName: function(file) {
                return file.originalPath;
            }
        }
    });
};

В чем может быть проблема?