Failed to load unit 'HGCM' fixing shared folders did no help

[mwoodpatrick]

I'm hitting the error

Failed to load unit 'HGCM' (VERR_INVALID_PARAMETER)

and after looking at previous posts I tried removing the shared folder I had (while virtualbox was not running) so now I have:

<SharedFolders/>

but I still get the same error anyone know what the issue is or how to fix?

I'm running VirtualBox VM 4.3.6 r91406 win.amd64 on windows 8.1 Pro