Make sure you have installed all the updates for Vista as well as the latest drivers for your video card.
The game needs to be executed as Administrator.
Carte Blanche is no threat for the system’s security. This comes from the fact that the games are saved in the installation directory and Vista requires administrator privileges to do that.
This usually means that the MPEG-1 codec used by your computer is either corrupted or somewhat incompatible with Carte Blanche’s videos. To solve this, you can download and install the K-Lite codec collection from this link:
*Warning : if you already have a codec collection installed, you need to uninstall it prior to installing a new one to prevent possible conflicts.