Adding media file problem

[mysteryspy2001]

I am having the same issue . I just purchased today Jan-01 2016 and when I drag a mp4 video file in to web designer I go through the normal question of asking me if I want the movie to auto start or not .
Then when I click an error message pops up saying web designer has stopped working and the program closes completely

Also tried the you tube widget and has the same issues

Have tried everything

I am using windows 10 64 bit with all the latest updates