Keyboard light doesn't work after updating to 10.8 on MBP

I have tried to update a MBP from Snow Leopard to Moutain Lion. But after updating the keyboard lights stopped working. Its A MBP from mid 2010 Core2, 2,4Ghz
We have tried to reset the smc.
Tried to untick the automatic brightness contoll of the keyboard llumination in system preferences.
Tried to use F5/F6 and it just shows that the keyboard light is turned on but its completly dark.
Is it coming a an mac os x 10.8 update for this problem?

Sounds like they did an Archive & Install, which leaves you with non-functioning Pro Apps (and Adobe apps, if you have any).
Try removing Final Cut Pro and Compressor and reinstall.
Instructions for reinstalling Final Cut Pro: http://support.apple.com/kb/TS1846
Instructions for reinstalling Compressor: http://support.apple.com/kb/TS1888
There is an application called FCS Remover, but I am not sure if it works with Final Cut Pro 4.
If it is still not working, I would try what David suggests.
Here is a list Jon Chappell has compiled about what versions of OS X, QuickTime and FCP works best together: http://www.digitalrebellion.com/blog/posts/recommendedquicktime_and_mac_os_configurations_for_final_cutpro.html
If you live close to an AppleStore you could try to bring it back and ask them to help you.
Best of luck!

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