virtualbox vm fails to run

[bldr7]

I get the following error when trying to run a vm using virtualbox

Kernel driver not installed (rc=-1908)

Make sure the kernel module has been loaded successfully.

where: suplibOsInit what: 3 VERR_VM_DRIVER_NOT_INSTALLED (-1908) - The support driver is not installed. On linux, open returned ENOENT.

and

The virtual machine 'linux' has terminated unexpectedly during startup with exit code 1 (0x1).


Result Code: 
NS_ERROR_FAILURE (0x80004005)
Component: 
MachineWrap
Interface: 
IMachine {85632c68-b5bb-4316-a900-5eb28d3413df}

i installed virtualbox by

pkg install virtualbox-ose

and did kldload vboxdrv

and added to /boot/loader.conf

vboxdrv_load="YES"

/etc/rc.conf

 vboxnet_enable="YES"

rebooted

pw groupmod vboxusers -m user

but the file /dev/vboxnetctl does not exist