virtualbox.org

i just install OpenBox OSE but when i start my vm, it says

The VirtualBox support driver which is running is from a different version of VirtualBox. You can correct this by stopping all running instances of VirtualBox and reinstalling the software..
VBox status code: -1912 (VERR_VM_DRIVER_VERSION_MISMATCH).

How to solve this?
I have ubuntu8.04
uname -r
2.6.24-19-generic

Try to reinstall the proper kernel module, virtualbox-ose-modules-2.6.24-19-generic. If that doesn't work, remove the OSE version and install the non-OSE version from the site. All the VMs will be kept.