--- a/master/slave_config.c	Mon Jun 23 12:03:37 2008 +0000
+++ b/master/slave_config.c	Tue Jun 24 10:55:40 2008 +0000
@@ -434,6 +434,9 @@
     unsigned int cleared[] = {0, 0};
     const ec_pdo_entry_info_t *ei;
 
+    if (!pdo_infos)
+        return 0;
+
     for (i = 0; i < n_infos; i++) {
         pi = &pdo_infos[i];