The following bug has been logged on the website:
Bug reference: 13877
Logged by: Carlos
Email address: carloshljr(at)yahoo(dot)com(dot)br
PostgreSQL version: 9.5.0
Operating system: Windows 7
Description:
PostgreSQL installer fails. First time it said that could not load SQL
modules. In other tries it said that could no initialize database cluster. I
tried to follow directions found on the web and installed using the user
"postgres". The installation was successfull but the service could not be
started.