VB 4.3.18 on Win7 64x Enterprise does not start VMs!!

[pdario]

Hello, I just installed latest version on my new desktop, but I can't start VMs.

When I try, firt o box says "loadlibrary failed with error 1790: The network logon failed", I click Ok and a second box says:

Failed to open a session for the virtual machine Ubuntu Desktop.

No error info.

Result Code: RPC_S_SERVER_UNAVAILABLE 0x800706BA (0x800706BA)
Component: ProgressProxy
Interface: IProgress {c20238e4-3221-4d3f-8891-81ce92d9f913}

Can anybody help solving this?

Thank you!!

[pdario]

Downgrading to v 4.3.12 solved the error, it seems: can anybody suggest how to make the latest version work?