Index: blender/render/intern/source/convertblender.c
===================================================================
--- blender/render/intern/source/convertblender.c	(revision 11992)
+++ blender/render/intern/source/convertblender.c	(working copy)
@@ -3986,8 +3986,12 @@
 	}
 	
 	init_render_world(re);	/* do first, because of ambient. also requires re->osa set correct */
-	if(re->wrld.mode & WO_AMB_OCC)
-		init_ao_sphere(&re->wrld);
+        if(re->wrld.mode & WO_AMB_OCC) {
+                if (re->wrld.ao_samp_method == WO_AOSAMP_HAMMERSLEY)
+                        init_render_hammersley(re);
+                else if (re->wrld.ao_samp_method == WO_AOSAMP_CONSTANT)
+                        init_ao_sphere(&re->wrld);
+        }
 	
 	/* still bad... doing all */
 	init_render_textures(re);