First time user - Can't create or open a project on Mac


Recently I installed my iMac Unreal Engine 4.13.0.

Whenever I try to create or open a project, it loads up to 100%, the loading screen goes away and then my computer freezes. When I wait, my computer starts making some kind of a weird noise and in a couple of minutes restarts itself. I don’t get any warnings or errors.

If it helps, I can see the projects I’ve created on the project browser. But when I click, it crashes anyway.

I would be really appreciated if you could help out.

My computer is;
iMac (Retina 5K, 27-inch, Late 2015)
3.2 GHz Intel Core i5
4 GB 1600 MHz DDR3
AMD Radeon R9 M380 2048 MB