[other] Error while parsing xm config

Hi,

I need to convert XM config file to domain XML. For that I have used below "Virsh" command on XEN host. After executing the command I see below error:

"error: internal error: parsing xm config failed".

Virsh command:

virsh -c xen:/// domxml-from-native xen-xm /home/isv/xen/windows-vm.cfg

Please let me know if there is a way to find what is causing the above error. Also, below is my windows-vm.cfg content.

builder='hvm'
memory=24576
vcpus=4
name="windows-vm"
vif=['']
disk=['phy:/dev/ubuntu-vg,hda,w','file:/home/test/downloads/9600.17050.WINBLUE_REFRESH.140317-1640_X64FRE_SERVER_EVAL_EN-US-IR3_SSS_X64FREE_EN-US_DV9.ISO,hdc:cdrom,r']
boot="dc"
serial="pty"
vnc=1
vnclisten="0.0.0.0"
vncpasswd=""

Thanks,
Veerabhadra