Index: dimension.c
===================================================================
--- dimension.c	(revision 28853)
+++ dimension.c	(revision 28854)
@@ -315,6 +315,11 @@
 	}
 }
 
+static pcb_subc_t *pcb_dimension_conv_objs(pcb_data_t *dst, vtp0_t *objs)
+{
+	return NULL;
+}
+
 static pcb_extobj_t pcb_dimension = {
 	"dimension",
 	pcb_dimension_draw_mark,
@@ -322,5 +327,6 @@
 	pcb_dimension_float_geo,
 	pcb_dimension_float_new,
 	pcb_dimension_chg_attr,
-	pcb_dimension_del_pre
+	pcb_dimension_del_pre,
+	pcb_dimension_conv_objs
 };
Index: line_of_vias.c
===================================================================
--- line_of_vias.c	(revision 28853)
+++ line_of_vias.c	(revision 28854)
@@ -199,6 +199,11 @@
 }
 
 
+static pcb_subc_t *pcb_line_of_vias_conv_objs(pcb_data_t *dst, vtp0_t *objs)
+{
+	return NULL;
+}
+
 static pcb_extobj_t pcb_line_of_vias = {
 	"line-of-vias",
 	pcb_line_of_vias_draw_mark,
@@ -206,5 +211,6 @@
 	pcb_line_of_vias_float_geo,
 	pcb_line_of_vias_float_new,
 	pcb_line_of_vias_chg_attr,
-	pcb_line_of_vias_del_pre
+	pcb_line_of_vias_del_pre,
+	pcb_line_of_vias_conv_objs
 };