[ovirt-users] Upgrade Problems from 3.6 to 4.0.3

Hello, I try to upgrade my ovirt engine from 3.6.7.5 to 4.0.3. When I start engine-setup I get the following message: "Failed to execute stage 'Setup validation': Trying to upgrade from unsupported versions: 3.5" My management client is a virtual CentOS 7.2 machine. I also tried the ovirt-engine migration from 3.6 to 4.0 on a new installed CentOS 7.2 machine. I got the same message. Attached is the engine-setup log. Regards, Michael