How to get Sage 5.1 working under VMWare Player 4.0?

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I want to use Sage 5.1 under VMWare Player 4.0.1 build-528992 . I successfully imported the virtual machine (sage-5.1.ova) by simply clicking open and ignoring any warnings (none of them seemed critical to me). However, when I now start the actual sage-5.1.vmx VM in the VMWare Player, it crashes (!) while booting the VM.

The last thing I can see is an error message after the login prompt:

sagevm login: [    5.655611] vboxguest: VirtualBox Guest PCI device not found.

Also there is another error message before:

[   4.219704] piix4_smbus 0000:00:07.3: Host SMBus controller not enabled!

I already changed the network settings to "Bridged" as suggested somewhere else.

I know that VirtualBox is recommended, but I do not have admin rights on my PC and have to cope with VMWare Player (which is installed).