In my render setup, I have the perspective viewport selected and locked. However, I notice that the Corona IR does not update to reflect the view I have in 3ds Max - in fact it is completely frozen! I have tried shutting down 3ds Max and restarting, but the problem is not resolved. This has not happened before and I have not changed anything since it last worked!. I noticed that the IR does work if I start the IR in an active viewport, but if I start it in the VFB, it no longer works. Sometimes the IR in the VFB just shows black and no objects are displayed. If I just open the VFB, it also just appears black. What is going on?