You tried to use the username "staff", which I'm afraid is reserved for use of the system. Try a different username. This is bug 47861, fixed in Edgy; the Edgy installer will warn you about reserved usernames immediately rather than crashing later.
You tried to use the username "staff", which I'm afraid is reserved for use of the system. Try a different username. This is bug 47861, fixed in Edgy; the Edgy installer will warn you about reserved usernames immediately rather than crashing later.