Index: trunk/ippScripts/scripts/stack_skycell.pl
===================================================================
--- trunk/ippScripts/scripts/stack_skycell.pl	(revision 32379)
+++ trunk/ippScripts/scripts/stack_skycell.pl	(revision 32562)
@@ -492,4 +492,17 @@
     &my_die("Couldn't find expected output file: $file",  $stack_id, $PS_EXIT_SYS_ERROR) unless $ipprc->file_exists($file);
 
+    # Funpack to confirm we've really made things correctly
+    my $diskfile = $ipprc->file_resolve($file);
+    if ($diskfile =~ /fits/) {
+        my $funpack  = can_run('funpack') or &my_die ("Can't find funpack", $stack_id, $PS_EXIT_SYS_ERROR);
+	my $check_command = "$funpack -S $diskfile > /dev/null";
+	my ( $success, $error_code, $full_buf, $stdout_buf, $stderr_buf ) =
+	    run(command => $check_command, verbose => $verbose);
+	if (!$success) {
+	    &my_die("Output file not a valid fits file: $file", $stack_id, $PS_EXIT_SYS_ERROR);
+	}
+    }
+    #####
+
     if ($replicate and $neb) {
         $ipprc->replicate_file($file) or &my_die("failed to replicate: $file\n",  $stack_id, $PS_EXIT_SYS_ERROR);