Index: work/util/ttf2lht/drv_poly.c
===================================================================
--- work/util/ttf2lht/drv_poly.c	(revision 18958)
+++ work/util/ttf2lht/drv_poly.c	(revision 18959)
@@ -103,6 +103,7 @@
 {
 	poly_stroke_t *s = (poly_stroke_t *)s_;
 	pcb_pline_t *pl, *next;
+	int err = 0;
 
 	pline_close(s);
 
@@ -111,18 +112,22 @@
 	for(pl = s->pos; pl != NULL; pl = next) {
 		next = pl->next;
 		pl->next = NULL;
-		if (!pcb_polyarea_contour_include(s->pa, pl))
+		if (!pcb_polyarea_contour_include(s->pa, pl)) {
 			fprintf(stderr, "Failed to include positive outline\n");
+			err++;
+		}
 	}
 
 	for(pl = s->neg; pl != NULL; pl = next) {
 		next = pl->next;
 		pl->next = NULL;
-		if (!pcb_polyarea_contour_include(s->pa, pl))
+		if (!pcb_polyarea_contour_include(s->pa, pl)) {
+			err++;
 			fprintf(stderr, "Failed to include negative outline\n");
+		}
 	}
 
-	if (pcb_poly_valid(s->pa)) {
+	if ((err == 0) && (pcb_poly_valid(s->pa))) {
 		s->spid = 0;
 		printf("    width=%fmil; delta=12.0mil;\n", OTX(&s->s, s->pa->contour_tree->bbox.x2 - s->pa->contour_tree->bbox.x1));
 		printf("    li:objects {\n");