And thanks for your quick reply - I'm based in the UK, so, am not sure where you are and what time zone you're in (it's currently coming up to 7pm my local time).
I've sent you an email with a Dropbox link to the email address you gave. Zipped Archive file size is 83mb.
For information, I'm using 3DS Max Design 2014, V-Ray 3.20.03 and RC 2.5.0.
I did try altering the setting you mention, but that didn't fix things.
Many thanks for your assistance - I really appreciate it.