Evening 
It looks like when adding Mist to the plain force the scene will hang at some point. I’ve tried this on todays nightly and one from the 24th November. Got a scene if you would like.
Max 2017
Hi flipbook,
Thank you for your scene. Indeed there was a bug in the way Phoenix FD processes the forces for the FLIP solver.
It is now resolved and the fix will be in tomorrow’s nightly build (November 30). Please try it tomorrow and tell us if there are any more problems.
Ahhh thanks for the speedy response as always! .. Shall let you know.
All good thanks