VirtualBox VERR_VM_DRIVER_VERSION_MISMATCH on Ubuntu
<p>I trying to install VirtualBox on Ubuntu 14.04. I've installed VirtualBox from Ubuntu repository:</p>

<pre><code>sudo apt-get install virtualbox
</code></pre>

<p>Then I added my user to vboxusers:</p>

<pre><code>sudo usermod -G vboxusers -a user
</code></pre>

<p>I also installed an extrapack for my vb vsion:</p>

<pre><code>wget http://download.virtualbox.org/virtualbox/5.0.10/Oracle_VM_VirtualBox_Extension_Pack-4.3.36-105129.vbox-extpack

sudo vboxmanage extpack install Oracle_VM_VirtualBox_Extension_Pack-5.0.10-104061.vbox-extpack
</code></pre>

<p>But when I trying to start vm, I get an error:</p>

<pre><code>RTR3InitEx failed with rc=-1912 (rc=-1912)The VirtualBox kernel modules do not match this version of VirtualBox. The installation of VirtualBox was apparently not successful. Executing  '/etc/init.d/vboxdrv setup'may correct this. Make sure that you do not mix the OSE version and the PUEL version of VirtualBox.

where: supR3HardenedMainInitRuntime
what:  4
VERR_VM_DRIVER_VERSION_MISMATCH (-1912) - The installed support driver doesn't match the version of the user.
</code></pre>

<p>And I have no <code>/etc/init.d/vboxdrv</code> file.
How can I fix this problem?</p>