Cubase Elements 6 " missing thumbnail cache" after update to

After updating to Cubase Elements 6.0.6 , when I open a video ( “live for ever” demo), the “copy to working directory” button is grayed out, and the movie displays “missing thumbnail cache”.
Tried to fix it by pressing “generate thumpnail cache” and it showed thumbnails frames but no video.
Any suggestions?

I solved it ! A graphic card update needed .