background using vue render in microstation

Hi There,

I'm hvaing trouble getting a background to be visible in a vue render from Microstation. Anyone got any ideas where I'm going wrong?

The view dialog box with a vessel rendered, but showing a black background.

The Atmosphere editor dialog box, on the Environment Map tab, with Environment Map ticked and a image selected and a Mapping mode of Cylindrical.

The vue render dialog is pointing to the Atmosphere preset of 'Myles' which has the Environment Map set as above. To my understanding the sky background should be rendered?

What am I doing wrong??