I am trying to follow along with the volume trail tutorial from Sidefx (youtube and vimeo) and everything works well until half way through. For some reason, the volume trail does not generate correctly. I've rechecked the steps and deleted and recreated the volume trail node, and it does not work. Would someone mind checking the file to see what I did wrong in the last step (selecting volume trail rather than volumevop1? Thank you.

I have fixed it.
Please check it out.

Thank you so much for doing this. It looks like you put the scattered points in the center of the volume to make it work. I wonder why this was not necessary in Sidefx's videos https://vimeo.com/162213251 [vimeo.com] and https://www.youtube.com/watch?v=YVbcF8g-Raw [www.youtube.com] at time 31:34.