Plugin is up to date on github now 
Can you prepare a sample project with only a little bit of blueprints, that has the you are describing, and post a link?
Have you tried in 4.15?
[QUOTE=Vahid;679368]
Hello , I want to know do you have any suggestion to show a menu in just desktop window when player is in VR mode ? I want to render an UMG in desktop window not in HMD...
Something like attached image.
Thank you...
[/QUOTE]
Sounds like you need a separate instance of the game / a different program in order to do that, because you want a viewport other than the gameviewport which is what the HMD is looking at :)
I dont understand the problem you are having, here is my latest link:
4.15 Build (HTML5, win32, win64, editor, dev packaged, and shipping)
I just downloaded from link myself, and tested in a new 4.15 BP-only project, it loaded just fine
