Hello, I've just installed pgAdmin 1.16.1 under for Windows (http://ftp.postgresql.org/pub/pgadmin3/release/v1.16.1/win32/pgadmin3-1.16.1.zip) running windows 8 64bit. Installation was successful and connection to databases is successful as well however when an incorrect password is entered during New Server Registration the OK button becomes disabled and not selectable after being prompted to re-enter the password. Changing the Name on the properties tab however seems to re-enable the OK button allowing for registration to continue.