This application need some amount of light to be able to recognize the marker so if your are seeing nothing special (meaning you are only seeing the video capture, try with more light.
Control click on the application and select Settings. Once the panel opens, go to the camera tab and, in the drop down menu, select "USB Video Class Video." Now your camera will be the default camera for all Flash webcam applications.
Seems like Skype is not correctly handling skype:met_baron?chat like URI (at least when using Skype on Mac) or that we have an error somewhere in our code. We are looking at the problem which should be resolve soon.
It's as easy as creating a new account on our server