Error starting domain: virDomainCreate() failed internal error QEMU quit during console startup

What does this mean and how do I fix it? Here is the relevant log: [root@potoroo log]# cat libvirt/qemu/RebuildKnoppix.log /usr/bin/qemu-system-x86_64 -M pc -no-kqemu -m 256 -smp 2 -monitor pty -boot c -hda /var/lib/xen/images/RebuildKnoppix.img -cdrom /var/lib/xen/isos/debian-40r1-i386-DVD-1.iso -net nic,macaddr=00:16:3e:52:3f:3f,vlan=0 -net tap,fd=15,script=,vlan=0,ifname=vnet1 -usb -vnc 0.0.0.0:1 bind() failed [root@potoroo log]# This is the first time since f9alpha that I've been able to try this, it used to work better than this.