I tested without much trouble the previous version (pgAdmin 4.1.0) on Windows 7 pro 32bits (spanish). But since the new version 4.1.1, the application fails and closes when trying to connect to the database: (PostgreSQL 9.2.4 on i686-pc-linux-gnu, compiled by gcc (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3, 32-bit).
After login, it shows the databases hosted on the server, but fails when you double click on one of them.
The strange thing is that retrying many times, it worked once (only once).