Cannot setup gerrit 2.11.3 on clean ubuntu 15.04 machine

Hi guys.

I'd like to ask gerrit-related question.
I hope you don't stone me to death for being on (formally) the wrong
mailing list.

I created clean ubuntu 15.04 (64 bit) virtual machine.
Then I followed gerrit 2.11.3 installation documentation.
The installation and initialization seem to be ok.
But - I fail to register the first user.

Anyone can try it out following the short information here:
https://groups.google.com/forum/#!topic/repo-discuss/73hW1PCQyak

Thanks a bunch,

--- KostaZ