Hi. not sure what is happening… I am not an expert in Phoenix but I can not get the Foam rendered with VRay 6 CPU. Any help?
Hmmm, one of the hot topics lately is in case you have updated your V-Ray to version 6, but did not install the corresponding Phoenix build - Phoenix has different installers for V-Ray Next, V-Ray 5 and now V-Ray 6. Could it be that this is the case? Check this for more info: https://youtu.be/4P551xgbCJQ?t=982
yes, it worked… I have just installed Phoenix version for Vray6 and it works… thanks!! 
Woohoo! Cheers!