Before Hollywood 6.0 all functions of Hollywood's vectorgraphics library could only be used if a separate plugin that implements vector-based drawing was present. Starting with Hollywood 6.0 there is basic support for vector-based drawing even without an external vectorgraphics plugin. However, inbuilt support for vector-based drawing does not support all features offered by the vectorgraphics library and might not look as good as vector-based shapes drawn by a specialized plugin. Still, it should be enough for most purposes.
For the best results and compatibility you should install an external vectorgraphics plugin that uses a dedicated vector render. For example, vectorgraphics plugins could implement vector-based drawing by using either platform-independent engines like cairo, or OS technologies like Apple's Quartz 2D or Microsoft's GDI+.
Once the plugin has been installed, use the SetVectorEngine() command to activate it. See SetVectorEngine for details.