--- gvpe/src/iom.C	2005/04/26 00:55:56	1.32
+++ gvpe/src/iom.C	2006/01/11 21:27:05	1.33
@@ -137,6 +137,11 @@
 #endif
   }
 
+  ~init ()
+  {
+    iom_valid = false;
+  }
+
   static void required ();
 } init;
 
@@ -216,6 +221,8 @@
 
 void io_manager::reg (sig_watcher &w)
 {
+  init::required ();
+
   assert (0 < w.signum);
 
   sw.reserve (w.signum);
@@ -250,7 +257,7 @@
 
 void io_manager::unreg (sig_watcher &w)
 {
-  if (!w.active)
+  if (!w.active || !iom_valid)
     return;
 
   assert (0 < w.signum && w.signum <= sw.size ());