VirtualBox - current running kernel were not found [FIX]

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###   Issues installing VirtualBox Guest Additions   ###
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sh ./VBoxLinuxAdditions.run
Verifying archive integrity... All good.
Uncompressing VirtualBox 4.2.18 Guest Additions for Linux............
VirtualBox Guest Additions installer
Removing installed version 4.2.18 of VirtualBox Guest Additions...
Copying additional installer modules ...
Installing additional modules ...
Removing existing VirtualBox non-DKMS kernel modules ...done.
Building the VirtualBox Guest Additions kernel modules
*** The headers for the current running kernel were not found. If the following
module compilation fails then this could be the reason. *** // THIS IS THE PROBLEM! HOW TO FIX BELOW

Building the main Guest Additions module ...fail!
(Look at /var/log/vboxadd-install.log to find out what went wrong)
Doing non-kernel setup of the Guest Additions ...done.
Installing the Window System drivers
Installing X.Org Server 1.12 modules ...done.
Setting up the Window System to use the Guest Additions ...done.
You may need to restart the hal service and the Window System (or just restart
the guest system) to enable the Guest Additions.

Installing graphics libraries and desktop services components ...done.
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Install the headers:

1. open up a terminal and type: uname -r, now copy the output, for example:
root@kali-linux:~# uname -r
3.10-3-amd64
root@kali-linux:~#
2. aptitude install linux-headers-3.10-3-amd64
3. Now open your virtualbox and once in your virtual distro, you will see a menu bar on the top, go to "devices" if I'm not wrong, and find the Install guest addition.
4. cp /media/cd-rom/VBoxLinuxAdditions.run /root/
chmod 755 /root/VBoxLinuxAdditions.run
cd /root
./VBoxLinuxAdditions.run

// Source: https://forums.kali.org/showthread.php?18973-Issues-installing-VirtualBox-Guest-Additions