*After a render has finished (and I do a lot of preview renders) it takes ages for it to decide to finish and often the 4 viewports will go black before everything rights itself and I can close the render and carry on

*Gill, please raise a ticket for this, I have this morning. Like you I also do a lot of preview renders to get things right so it is a right royal PITA...

Injustice will be avenged.
Cofiwch Dryweryn.