virtualbox error - crash when trying to open

At the same time, cannot install the updated version - virtualbox-4.0_4.0.4-70112~Ubuntu~lucid_i386.deb

Error: Conflicts with the installed package 'virtualbox-3.2'

Are you in the vboxusers group?

Actually i don't need to... I found the solution with:

sudo apt-get install dkms

then:

sudo /etc/init.d/vboxdrv setup

I couldn't find a clear solution online, so i put 2 +2 together

All fine now, thanks anyway

I'm trying to resolve the same issue. I already have virtualbox-4.0_4.0.4-70112. I can't open a session due to the same error message. DKMS is installed but when I try to run sudo /etc/init.d/vboxdrv setup I get the error;
 * Trying to register the VirtualBox kernel modules using DKMS
Error! Your kernel headers for kernel 2.6.38-8-generic-pae cannot be found at
/lib/modules/2.6.38-8-generic-pae/build or /lib/modules/2.6.38-8-generic-pae/source.

How do I fix this ? or should this be in another thread ?

Install linux-kernel-headers in whatever way you choose and it should help

In System->Administration->Synaptic search packet whose name include "linux-header". Check you have 2.6.38-8 one.
Which version of Ubuntu are you using ?

I'm running 10.10 and I have linux-headers-2.6.38-8 and /linux-headers-2.6.38-8 generic

2.6.38 is the Natty kernel branch. Reboot to 2/6/35 and you will be fine.

I don't seem to be able to access the internet when I got back to 2.6.35. I followed info in Question #141370 and completely removed virtualbox and dkms and re-installed dkms (sudo apt-get install dkms build-essential linux-headers-generic) then re-installed Virtual-box 4.0 using Synaptic package manager. It's interesting I had a different virtual box ose installed(from sun I think) although it was the same version. Now I'm getting a Kernel driver not installed (rc=-1908) error - Please install the virtualbox-ose-dkms package and execute 'modprobe vboxdrv' as root. I get a fatal error when trying to run modprobe vboxdrv.

How did you get kernel 2.6.38-8 ?

I used update -manager -d to try and get 11.04 and ended up with 10.10 and have been kinda baffled since then.

Great log a bug, natty is not stable nor ready and is full of bugs which will cause things like this

I think the issue is that I don't actually have natty(or do I ?) About ubuntu says 10.10, should I act as if I have natty ?

I think the issue is that I don't actually have natty(or do I ?) About ubuntu says 10.10, should I act as if I have natty ?

So your system is a mess... You are between 10.10 and 11.04.
Could you wait delivery of final Natty in two weeks, install it properly and try again to install Virtual Box, or do you need Virtual Box soon ?

I was in the middle of some android and ios app development in two of my vm's, I would really love to continue. If there is no way to resolve I can wait a couple weeks.