--- loncom/auth/switchserver.pm	2010/08/13 00:06:27	1.28.2.1
+++ loncom/auth/switchserver.pm	2010/08/18 19:40:23	1.28.2.2
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Switch Servers Handler
 #
-# $Id: switchserver.pm,v 1.28.2.1 2010/08/13 00:06:27 raeburn Exp $
+# $Id: switchserver.pm,v 1.28.2.2 2010/08/18 19:40:23 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -121,7 +121,11 @@ sub handler {
         my $canhost = 1;
         my $uprimary_id = &Apache::lonnet::domain($env{'user.domain'},'primary');
         my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
-        my @intdoms = &Apache::lonnet::get_internet_names($env{'form.otherserver'});
+        my @intdoms;
+        my $internet_names = &Apache::lonnet::get_internet_names($env{'form.otherserver'});
+        if (ref($internet_names) eq 'ARRAY') {
+            @intdoms = @{$internet_names};
+        }
         unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
             my $serverhomeID = &Apache::lonnet::get_server_homeID($switch_to);
             my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);