Importing the Maestro VM
Maestro is distributed as Open Virtualization Format (OVF) and VMware packages, that can be used in several virtualization tools.
The VMware package can be opened directly in VMware Workstation or Fusion from the Open menu.
If you are using VMware Workstation or a recent version of VMware Fusion you may be able to import the OVF package as well.
The OVF file can be imported from VirtualBox menu File > Import Appliance
Please ensure the time in the server is right. The VM will automatically use NTP to correct the time on startup, but could fail to do so if there is no internet connection.
Particularly important in VMware, as the VM starts with the clock set to the host time instead of UTC.
In VirtualBox, under Settings -> System -> Motherboard, the box Hardware clock in UTC time must be checked.