bugs or minor issues: a file named anything_2.blend when I push '+' to increase to '3' it puts a '12' instead is this a know issue? more: a material with fresnel 2.0 and Ztransp clicked does not render as transparent. I am using Shadow, EnvMap and Ray in the render settings. more: the render preview does not update unless one rotates/scales the viewer. If materials change, or lamp values, etc., the preview render remains.