Foam not rendering in V-Ray 7

[robert_newton]

I recently upgraded to V-Ray 7 (hotfix 1). I went back to some older V-ray 6.2 Phoenix scenes which contained liquid and foam to do some tweaks and I noticed that the foam no longer rendered in those scenes though it was clearly present. I created a simple test scene (attached). I've attached several screen shots and the scene itself. Really puzzled what happened. Was it my upgrade? Anyone else having problems rendering foam?

[tashko.zashev]

Hi,

Such issue may occur when there is incompatibility between the plugin versions. Have you updated the Phoenix build with a compatible one for V-Ray 7? You can check from the Phoenix menu About option, whether it states Phoenix for V-Ray 6.x or 7.x. Then take the latest Phoenix plugin from the download section of chaos.com web site.
Let me know if this is the case or its a different issue,