--- Unode-1.0.1/node.c.orig	2012-08-19 11:27:55.432188855 -0700
+++ Unode-1.0.1/node.c	2012-08-19 11:28:10.431189116 -0700
@@ -184,7 +184,8 @@
 		strcpy(User.ul_name, "local");
 		if ((p = get_call(getuid())) == NULL) {
 			node_log(LOGLVL_ERROR, "No uid->callsign association found", -1);
-			axio_flush(NodeIo);
+                        if(NodeIo!=NULL) /* avoid crash if login to callsign not mapped with axparms -assoc */
+			      axio_flush(NodeIo);
 			return 1;
 		}
 		strcpy(User.call, p);