Stonemason's Heart of the East - Cameras Problem

I recently bought Stonemason's "Heart of the East".  I load the iray scene which seems fine and can move the camera around the scene without any problems.  But when I load the included "Camera Presets", all of the 6 included cameras are identical, so switching between them gives exactly the same view.  This means that the included "Render Presets" scenes don't work correctly because of course they depend on the cameras.

I have tried re-installing the product, but with the same results.  As this isn't a very new product, I am fairly sure that it's not an issue with the product itself because others would have posted about the problem, but more likely Daz Studio itself.

I am running Daz Studio version 4.10.0.123 and Windows 10 v1803.

I would appreciate any ideas on how I can solve this.

EDIT: I should add that Ihave tried other Stonemason scenes with multiple cameras such as "Urban Future 5" and everything is working as it should.