Index: gtk/gtk_scaffolding.c
===================================================================
--- gtk/gtk_scaffolding.c	(revision 4062)
+++ gtk/gtk_scaffolding.c	(working copy)
@@ -584,8 +584,10 @@
 		} else {
 			struct browser_window *bw;
 			bw = nsgtk_get_browser_window(gw->top_level);
-			box_dump(fh, bw->current_content->data.html.layout->children,
-				0);
+			if(bw->current_content->data.html.layout!=NULL)
+				box_dump(fh, bw->current_content->data.html.layout->children,
+					0);
+			else fprintf(fh,"Not implemented!");
 			fclose(fh);
 		}