Hi.

• HW: MacBook Pro (Retina, 13-inch, Mid 2014)
• OS: macos sierra (10.12.4)
  

please.

P.S.
Esenthel Engine is easy to use

Are there any messages? What happens exactly when you try?

Thanks for reporting the problem, however I've just tried and it works fine.
You might want to check your firewall.

The Happning,
When: After selecting a path; From showed "Instaling to" panel.
Condition: Progress Bar will not be proceeding.
Note: Application's Close Button is valid.

to Dwight
no messages from Installer. By the way, macos's Console had echoed a message from the security software. The happening is above.

to Eseenthel
As you said, I resolved. I found that the security software I used has two firewalls ("Firewall", "Web Protect").

Thank you.