[ovirt-users] ISO Domain Problems

Hello Fellow users, Platform : Ovirt Engine 4.1 Problem : ISO Domain server has crashed. It is a separate NFS server.  I am unable to replace the ISO Domain.  I have the old one in maintenance but it won't detach.  It says. VDSM command ActivateStorageDomainVDS failed: Storage domain does not exist: (u'0ad098e9-65e7-494a-90f7-e42949da3f85',) Which is quite true it does not exist.. Any suggestions? Thank you