How to make a "Royal fog" ?

[meuh21]

A few weeks ago I build a map test in Canyon with the Royal effect like this guys did in screens or video ( http://youtu.be/Cu_09MhqjUk around 3:00)

Messing around with the tornado from Royal
https://dl.dropboxusercontent.com/u/588 ... Shot08.png
https://dl.dropboxusercontent.com/u/588 ... Shot07.png
https://dl.dropboxusercontent.com/u/588 ... Shot10.png

I just retry because i wanted to put it in Valley. I can open my map canyon and when i want to play the game crash

Better than to use the royal tornado i would prefer to create my own "Royal fog". So my question : how to do that ?

Some ideas ?

[riolu]

Since one of the recent updates importing the Tornado into different environments doesn't work anymore. As you already found out, the game just crashes
I wish Nadeo will fix it, although I can understand this might have the lowest priority ever x)