Rendering produces red block

[minotto]

I've just encountered something i've never seen before in using VWs for the past 6 years.

 

When rendering a viewport in Fast Renderworks or Realistic Exterior Final, the result produces a red block on the left side of the drawing. 

Can anyone tell me why this is happening?  Could it be a memory or processor issue?

 

It only happens on one file.  All the other files seem to render fine.

 

Mac OS  10.13.2

VWs designer 2017 SP5 (Build 402127)
3 GHz 8-Core Intel Xeon E5

32 GB 1866 MHz DDR3

[PVA - Admin]

Do you still see this if you create a new viewport from scratch? It isn't an object inside Crop or Annotations or anything like that?

[minotto]

I trashed the viewport and made another.  It seems to be ok now.  The problem was the viewport.  Strange i've never seen this before.

Thanks Jim.