Index: uspace/app/sbi/src/os/helenos.c
===================================================================
--- uspace/app/sbi/src/os/helenos.c	(revision 074444f189ee9356421b26e70454fae61c81def3)
+++ uspace/app/sbi/src/os/helenos.c	(revision 5ba201d1b59ac56658a3f14dd383a51abae28b5e)
@@ -35,4 +35,5 @@
 #include <task.h>
 #include <tinput.h>
+#include <str_error.h>
 
 #include "os.h"
@@ -154,7 +155,8 @@
 	int retval;
 
-	tid = task_spawn(cmd[0], (char const * const *) cmd);
+	tid = task_spawn(cmd[0], (char const * const *) cmd, &retval);
 	if (tid == 0) {
-		printf("Error: Failed spawning '%s'.\n", cmd[0]);
+		printf("Error: Failed spawning '%s' (%s).\n", cmd[0],
+		    str_error(retval));
 		exit(1);
 	}