Maya 2018 Won't render error

[ID22OX22]

In Maya 2018, Arnold won't render. I got this error:

Error: [proc] liquidShape1: error in user init from

How do I fix it?

[ashley.handscomb.retallack]

Is there any more to that error? Have you got a fluid in your scene, does the rror go away if you hide it?

[ID22OX22]

I'm using bifrost.