diff -up cdrkit-1.1.11/icedax/icedax.c.handler cdrkit-1.1.11/icedax/icedax.c

--- cdrkit-1.1.11/icedax/icedax.c.handler	2011-06-02 16:37:02.446206285 +0200

+++ cdrkit-1.1.11/icedax/icedax.c	2011-06-02 16:37:25.444206279 +0200

@@ -1054,7 +1054,7 @@ static void exit_wrapper(int status)

 	if (child_pid != 0) {

 		SCSI *usalp = get_scsi_p();

-		if (usalp->running) {

+		if (usalp && usalp->running) {

 			usalp->cb_fun = on_exitscsi;

 			usalp->cb_arg = (void *) (uintptr_t) status;

 		} else {