Index: trunk/pstamp/src/pstampdump.c
===================================================================
--- trunk/pstamp/src/pstampdump.c	(revision 35448)
+++ trunk/pstamp/src/pstampdump.c	(revision 42386)
@@ -115,5 +115,5 @@
                 }
                 if (!email) {
-                    psErrorStackPrint(stderr, "failed to find action in fits header of: %s\n", email);
+                    psErrorStackPrint(stderr, "failed to find action in fits header of: %s\n", "NULL");
                     return PS_EXIT_DATA_ERROR;
                 }