when I select to render out using the blender internal renderer the image renders out quite nicely, yet when I choose yafray, the render is just a black screen- does anyone have any ideas what the problem could be
Check your console. If yafray is setup correctly it should render, but it gives no visual feedback. In the console you should be able to see the rendereing efford. The render window just shows a result when the render is finished.
Possibly you haven’t installed Yafray; get it from yafray.org
aaaaah that is it!!! it always helps to install the software dah! thanks hey- working perfectly