It might be something on your end then. I'm sure it works for others.
So good Im uploading a video for it! https://www.youtube.com/watch?v=iUtNDmklAHI
:O
I have uploaded the Vortex as well to Blockland Glass just now! If you have downloaded Vehicle_Vortex from the Blockland Forums, remove that from your addons folder, and download it from Blockland Glass with the link that takes you there!