Hi melika -

Thanks for the idea. 2000 x1250 stopped at 80%
1600 x 1000 stopped at 100% but the hour glass never left the screen
1024 x 640 finished.

Now what does not make sense to me ,anyway, is that I normally render at 2400 x 1500 or 1600 depending on the aspect ratio. A scene I did previously had similar scenery other than the atmosphere (same scene in a different perspective) and was larger in size as well as in polygon count and I did it using User with multipass rendering , etc. This scene worked perfectly at 2400 x 1500. It has over 2 mil polygons and is much larger MB wise than the one that will only render at 1024 x 640. The basic scenery is the same other than the atmosphere whose settings are higher.