Could not launch Unreal Engine 4.7.6 on mac

Hi there!
Whenever I try to launch Unreal Engine it an error message “Failed to Launch - Could not launch Unreal Engine. Please verify the installation.”

I’ve already uninstalled, downloaded the program again and re-installed it. Any ideas what’s going on and what should I do?

Cheers,

Enzo

Same problem, no idea what it can be…