Hi sorry for my bad English, I have the same problem 
xelobo
i have this error message when i try to test the fileSaverDemo.capx, and the webcam no turn on :
"uncaught referenceError: real_creat_object_url is not defined 91(col undefined)
this is either a bug in construct 2 or a problem in a third party plugin or behavior-please report it to the developer!"
How can I fix it? thank you all