It seems that the error was irrelevent and the installation actually occured anyway.
Now if i visit the index page I'm logged in as a guest.
Found alternative issues with chat rooms.
click join chat room
enter room that does not exist
enter password
first time it displayed an error saying there were invalid characters, next time it does nothing at all (although the room was created in the db).
After clicking join a few times, the join room stayed on screen for several minutes, then the room appeared (on the list on the right), and i was told I am already in the room.
If I double click on any of the rooms i am asked for a password, when entered, i am told i am already in the room. However, from a chat point of view, i only see the lobby