Track

Export Mesh to VRayProxy with material.

Create VRayProxy with material.

Load VRayProxy Material.

Utility for rendering animation and static scenes in 2 Stages from the animated camera.

At 1st Stage is calculated LightCache in Fly-through mode and

Irradiance Map in incremental add to current map mode for the entire scene,

while 2nd Stage is the final rendering.

This approach allows for all frames receive the same high-quality Irradiance map in less time.
For more information see topik Rendering a walk-through animation from Vray tutorial.

Main Features:

• Rendering in two stages for to obtain better results in less time.
• Support for network rendering (BackBurner, Vray Distribute Render, Duma)
• Ability to exclude from the Global Illumination rendering VrayFur, RPC, some lights and Displace.
• Automatic creation of animated camera VrayCam.
• Create subfolders for RenderOutput, RenderElements and irradiance map.
• Automatized naming LightCache, Irradiance map, RenderOutput and RenderElements.

VrayMultiStageRender v2.0.52

• Fixes issues with save Split Render Channels
• Now VrayCam can be created from the animated cameras

Might work for one vertice, if not I'll put up another which works for just one as well.
There are probably already a dozen scripts like this up here, but this is one I wrote just to track a dummy to each vertice I specify. Lots of reasons to use it, track an object to some point cache animation etc.