Solved: Can't see the concert of Blind Guardian

[JoeSlow]

I finished the Blind Guardian quest and was teleprted to the music hall and received the instruments from Blind Guardian but I didn't see the concert.

In the main screen of Sacred 2 Gold where you can watch the videos, the concert video is now highlighted but the video doesn't start.
I can see the first video. So my computer should be capable to see the concert video too.

EDIT:
The concert file is present:
F:\Steam\steamapps\common\Sacred 2 Gold\video\concert.bik

EDIT:
After restarting Sacred 2, I can start and watch the concert video :-)