Unreal Engine 4.7 Preview

Hi, I am pretty new to UE4 and am having a strange crash/lock up.

I created a 4.7 (preview3) project using 3rd person template, placed a cube in map, and have got a video running on cube. I can play project in editor as much as I like and it works fine, but if I package project (windows64bit), then wait for build to finish, and then try to play in editor, editor locks up…

Anyone had problem before?

EDIT: Forgot to add… video plays fine in editor with sound, but only plays video without sound in packaged project, :frowning: