(SOLVED) Virtualbox 1.4 error

[Kasumi_Ninja]

When I start a Virtual Machine I get this error:

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Unknown error initializing kernel driver (VERR_VM_DRIVER_VERSION_MISMATCH).
VBox status code: -1912 (VERR_VM_DRIVER_VERSION_MISMATCH).


Result Code: 
0x80004005
Component: 
Console
Interface: 
IConsole {1dea5c4b-0753-4193-b909-22330f64ec45}

cat /etc/modules.autoload.d/kernel-2.6

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# /etc/modules.autoload.d/kernel-2.6:  kernel modules to load when system boots.
#
# Note that this file is for 2.6 kernels.
#
# Add the names of modules that you'd like to load when the system
# starts into this file, one per line.  Comments begin with # and
# are ignored.  Read man modules.autoload for additional details.

# For example:
# aic7xxx
vboxdrv

cat /boot/grub/grub.conf

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default 0
timeout 5
splashimage=(hd0,2)/boot/grub/splash.xpm.gz

title=Gentoo Linux (2.6.18-gentoo-r6)
root (hd0,2)
kernel /boot/kernel-genkernel-x86-2.6.18-gentoo-r6 root=/dev/hda3 nmi_watchdog=0

Any ideas what can be wrong?

[Mark Clegg]

Have you just upgraded from an earlier version? If so, and you haven't rebooted, you'll need to reload the kernel module to get the right version into the kernel.

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rmmod vboxdrv
modprobe vboxdrv

[Kasumi_Ninja]

Have you just upgraded from an earlier version? If so, and you haven't rebooted, you'll need to reload the kernel module to get the right version into the kernel.

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rmmod vboxdrv
modprobe vboxdrv

Rebooting? What is that? Thanks for your help. It worked!