--- gegl-0.2.0/gegl/property-types/gegl-path.c.~1~	2012-03-24 18:51:30.000000000 +0400
+++ gegl-0.2.0/gegl/property-types/gegl-path.c	2015-01-04 11:04:41.531653311 +0300
@@ -681,6 +681,8 @@
   GeglPathList *prev = NULL;
   InstructionInfo *info = lookup_instruction_info (knot->type);
 
+  if (info != NULL)
+    {
   gint count=0;
   for (iter = priv->path; iter; iter=iter->next)
     {
@@ -715,6 +717,7 @@
   priv->flat_path_clean = FALSE;
   priv->length_clean = FALSE;
   gegl_path_emit_changed (vector, NULL);
+    }
 }
 
 void