It wouldn't hurt to keep trying a few times, in case it is semi-random. A couple people have mentioned having a problem here, but not later in the game.
The problem with the preceding cutscene could be a codec issue. See the reply in the topic
In-game video 'lag' Win7 64-bit (STEAM) (different problem, but most of the suggestions are relevant).
As above, you can also email support@larian.com, with a description of the problem and maybe a link to this topic. See the DKS
support page.