karma, when run via intelliJ, crashes when using karma-typescript plugin.

I'm using https://github.com/monounity/karma-typescript to test a typescript npm module. It's more or less the only plugin that seems to do everything right out of the box without the necessity to set up 20 other plugins to do the same job in a quirky way.

Using the default configuration it's running perfectly fine via cmd `karma start`. All sources are compiled,tests are executed nicely and reports get generated, line coverage seems to be fine etc. etc.

When run via intelliJ it will crash:

    ```TypeError: Cannot read property 'push' of undefined
    at C:\git\ts-http-client\node_modules\karma\lib\reporters\multi.js:6:24
    at Array.forEach (native)
    at MultiReporter.addAdapter (C:\git\ts-http-client\node_modules\karma\lib\reporters\multi.js:5:15)```

This issue pops up during the "initialising tests" stage and only happens when run via IntelliJ. My code is compiled to ES6. Karma uses es6-shim to behave. The issue is happening with all reporter combinations i tried out.

my karma.config.js

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

        frameworks: ["karma-typescript", "jasmine"],

        files: [
            "node_modules/es6-shim/es6-shim.js",
            {pattern: "src/**/*.ts"},
            {pattern: "test/**/*.ts"}
        ],

        preprocessors: {
            "src/**/*!(\.d).ts": ["karma-typescript"],
            "test/**/*!(\.d).ts": ["karma-typescript"]
        },

        karmaTypescriptConfig: {
            compilerOptions: {
                target: "ES6"
            },
            excludeFromCoverage: /(\.d|\.spec|\.test|Test)\.ts/,
            reports: {
                "clover": "coverage",
                // "cobertura": "coverage",
                "html": "coverage",
                "json-summary": "coverage",
                "json": "coverage",
                // "lcovonly": "coverage",
                //"teamcity": "coverage", // "destination/path" or null or ""
                // "text-lcov": "coverage", // ...
                "text": null
            }
        },

        reporters: ["progress", "karma-typescript"],

        browsers: ['Chrome']
    });
};

Using phpStorm 2016.3.2 with current Karma runner plugin. 

I'm a bit clueless right now... might just be monday though. Ideas? :)