engine was built on vt20, moving back to modified
Verified on vt20.2 images with .ISO extensions are seen on the list of change CD, and picking it from this list, end up successfully: Event: "CD IPXE.ISO was inserted to VM test by admin@internal"
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://rhn.redhat.com/errata/RHBA-2016-0315.html