Opening Zen Garden stuck on "Loading 95%"

Hi,

I’m trying out the just released Zen Garden from the marketplace and I try to open it on my Macbook Pro with dedicated graphics card.

Unfortunately when I try to open it it gets stuck on “Loading… 95%” with the CPU hitting 100%. I read in another thread that opening it for the first time might take a while. But in this instance I left it open for over 12 hours and it still hadn’t progressed.

I opened the Zen project without any problems with the same UE4 version on my Windows 10 desktop.

Anyone any clue what is causing this?

Here images showing the specs of my macbook and loading screen activity monitor:

102443-screenshot+2016-08-11+10.35.01.png

Just wait. Its takes some time. Sometimes even close to hour - all depends on project.