On the screen shown below these lines:

We need a web server, DNS server, mail server, and a MySQL database, but nevertheless I don't select any of them now because I like to have full control over what gets installed on my system. We will install the needed packages manually later on. Therefore we just select Standard system and hit Continue:

 the Desktop environment was left out: ( ) instead of (*)

 I followed these instructions, believing that at some point later this would be corrected.

 It was not, so I went through the whole installation process again.