Issue with VBox 3.1.6 OSE on FBSD 8.0 Release, Bug?

[icegloom dem]

VBoxManage createvm    [--ostype <ostype>]

VBoxManage list ostypes
...
ID:          Linux26
Description: Linux 2.6
...
ID:          RedHat
Description: Red Hat

VBoxManage createvm --name "CentOS-5.4-i386" --ostype RedHat --register