IO reference error on calendar & newsfeed

[ascore5000]

Hi everybody,

i have a problem with my magic mirror implementation.
If I use a fresh download of MM2 and activate in the config file the newsfeed or the calendar, I got an error on the console:
ReferenceError: io is not defined
Stack:
MMSocket() socketclient.js:11 Module<.socket() module.js:160 Module<.sendSocketNotification() module.js:298 .addCalendar() calendar.js:279 .start() calendar.js:67 startModules() loader.js:55 loadModules/loadNextModule/<() loader.js:40 loadFile/stylesheet.onload() loader.js:190

The error occurs on socetclient.js on line 11.

My config file:

{
			module: 'newsfeed',
			position: 'bottom_bar',
			config: {
				feeds: [
					{
						title: "New York Times",
						url: "http://www.nytimes.com/services/xml/rss/nyt/HomePage.xml"
					}
				],
				showSourceTitle: true,
				showPublishDate: true
			}
		},

{
			module: 'calendar',
			header: 'US Holidays',
			position: 'top_right',
			config: {
				calendars: [
					{
						symbol: 'calendar-check-o ',
						url: 'webcal://www.calendarlabs.com/templates/ical/US-Holidays.ics'
					}
				]
			}
		},

If I comment this lines out, the time and the weather is working.

I hope you can help me, thank you!
ascore5000

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