[ovirt-users] unable to upgrade from ovirt 3.6 to 4.0.4

Hey all, Im trying to upgrade my ovirt installation, CentOS 7.2 fully updated engine version: oVirt Engine Version: 3.6.7.5-1.el7.centos hosts version: OS Version: RHEL - 7 - 2.1511.el7.centos.2.10 Kernel Version: 3.10.0 - 327.36.1.el7.x86_64 KVM Version: 2.3.0 - 31.el7_2.10.1 LIBVIRT Version: libvirt-1.2.17-13.el7_2.5 VDSM Version: vdsm-4.17.32-1.el7 SPICE Version: 0.12.4 - 15.el7_2.2 GlusterFS Version: [N/A] CEPH Version: got the following error after deploying the backup tar (following this guide http://www.ovirt.org/documentation/migration-engine-3.6-to-4.0/) Failed to execute stage 'Setup validation': Trying to upgrade from unsupported versions: 3.5 attaching the engine-setup answer and log Thanks,