karma: v1.1.0 and v1.2.0 do not run any tests

Expected behavior

Karma runs my tests

Actual behavior

I see the following output:

29 06 2016 15:12:22.909:INFO [karma]: Karma v1.1.0 server started at http://localhost:9876/
29 06 2016 15:12:22.913:INFO [launcher]: Launching browser PhantomJS with unlimited concurrency
29 06 2016 15:12:22.927:INFO [launcher]: Starting browser PhantomJS
29 06 2016 15:12:25.739:INFO [PhantomJS 2.1.1 (Windows 8 0.0.0)]: Connected on socket /#bDpfsp5qhtjVLGXQAAAA with id 3610229

START:
(node:20928) Warning: .then() only accepts functions but was passed: [object Undefined], [object Undefined]
(node:20928) Warning: .then() only accepts functions but was passed: [object Undefined], [object Undefined]
(node:20928) Warning: .then() only accepts functions but was passed: [object Undefined], [object Undefined]
(node:20928) Warning: .then() only accepts functions but was passed: [object Undefined], [object Undefined]
(node:20928) Warning: .then() only accepts functions but was passed: [object Undefined], [object Undefined]
(node:20928) Warning: .then() only accepts functions but was passed: [object Undefined], [object Undefined]
(node:20928) Warning: .then() only accepts functions but was passed: [object Undefined], [object Undefined]
PhantomJS 2.1.1 (Windows 8 0.0.0) ERROR
  ReferenceError: Can't find variable: jasmineRequire
  at G:/Cloud/Apps/REMProcessPilot/angular2-webpack/Diamant.Cloud.Apps.REMProcessPilot/node_modules/karma-jasmine-html-reporter/src/lib/html.jasmine.reporter.js:24
PhantomJS 2.1.1 (Windows 8 0.0.0) ERROR
  ReferenceError: Can't find variable: jasmineRequire
  at G:/Cloud/Apps/REMProcessPilot/angular2-webpack/Diamant.Cloud.Apps.REMProcessPilot/node_modules/karma-jasmine-html-reporter/src/lib/html.jasmine.reporter.js:24
PhantomJS 2.1.1 (Windows 8 0.0.0) ERROR
  ReferenceError: Can't find variable: jasmineRequire
  at G:/Cloud/Apps/REMProcessPilot/angular2-webpack/Diamant.Cloud.Apps.REMProcessPilot/node_modules/karma-jasmine-html-reporter/src/lib/html.jasmine.reporter.js:24

Finished in 0.151 secs / 0 secs

SUMMARY:
√ 0 tests completed

Enviroment Details

• Karma Version 1.1.0
• Windows 8.1

Karma.conf.js:

const webpackConfig = require('./webpack.tests.config.js');

module.exports = function (config) {
    config.set({

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

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

        // list of files / patterns to load in the browser
        files: [
            { pattern: 'config/tests.js', included: true, watched: false },
            { pattern: 'static/images/**/*', included: false, watched: false },
            { pattern: 'static/data/**/*', included: false, watched: false }
        ],

        // list of files to exclude
        exclude: [
        ],
        proxies: {
            '/images': '/base/static/images',
            '/data': '/base/static/data'
        },

        webpack: webpackConfig,

        webpackMiddleware: {
            noInfo: true,
            stats: {
                colors: true
            }
        },

        plugins: [
            'karma-webpack',
            'karma-jasmine',
            'karma-phantomjs-launcher',
            'karma-chrome-launcher',
            'karma-verbose-reporter',
            'karma-clear-screen-reporter',
            'karma-jasmine-html-reporter',
            'karma-sourcemap-loader',
            'karma-mocha-reporter',
            'karma-trx-reporter'
        ],

        preprocessors: {
            'config/tests.js': ['webpack', 'sourcemap'],
        },

        verboseReporter: {
            color: 'full',
        },

        trxReporter: { outputFile: 'test-results.trx' },

        mochaReporter: {
            // output: 'autowatch'

        },


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

        // web server port
        port: 9876,

        webpackServer: { noInfo: true },

        // 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: https://npmjs.org/browse/keyword/karma-launcher
        browsers: ['PhantomJS'],
        //browsers: ['Chrome'],

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

        // Concurrency level
        // how many browser should be started simultaneous
        concurrency: Infinity
    });
}

Steps to reproduce the behaviour

1. Upgrade karma to 1.1.0
2. karma start karma.conf.js

Karma works as expected with 1.0.0