On the step of server configuration, when I press install the installation process (the process bar) hides itself on “setup add-ons” (about 1/3 of the way of the bar) and it goes back to the page with server configuration. When I click Install again, same story.
No error message, nothing.
Ok, it went through the 4th time I did it… it seems all very random 
Hello!
It is the Directory Permission issue.
Can you please provide us the Server Details. We Would install it for you without any Charge.
Thanks,
Aditya