package virtualbox-ose-dkms (not installed) failed to install/upgrade: subprocess new pre-installation script returned error exit status 5

[CLS1]

Binary package hint: virtualbox-ose

After the install, it gave an error, which i believe was reported, however now, it gives two errors:
Failed to open a session for the virtual machine Win 7
The virtual machine 'Win 7' has terminated unexpectedly during startup with exit code 1

and

Kernel driver not isntalled (rc=-1908) Please install the virtualbox-ose-dkms package and execute 'modprobe vboxdrv' as root

ProblemType: Package
DistroRelease: Ubuntu 11.04
Package: virtualbox-ose-dkms (not installed)
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic-pae 2.6.38.2
Uname: Linux 2.6.38-8-generic-pae i686
Architecture: i386
Date: Tue May 3 15:05:28 2011
ErrorMessage: subprocess new pre-installation script returned error exit status 5
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
SourcePackage: virtualbox-ose
Title: package virtualbox-ose-dkms (not installed) failed to install/upgrade: subprocess new pre-installation script returned error exit status 5
UpgradeStatus: Upgraded to natty on 2011-04-29 (4 days ago)
VirtualBoxOse.ModInfo: