'please update your graphics card driver'

Big problem here.

Our Mac Pro is to the repair and we got a spare. Made a clone of the bootdisk.
Everything works, except the video. When I go to device setup>video there is a red line saying:

‘Please update your graphics card driver….’

I cannot select anything (no external/internal video driver).
When I go to N5.5.6 everything is fine, I see all my video drivers (internal and external BM decklink).
Already trashed the prefs, installed new decklink drivers and re-installed N6.0.6 but nothing helps.

Any thoughts?


Hello group

An update from Lion to Mountain Lion seems to have solved the problem.