--- loncom/interface/londocs.pm	2023/10/06 14:21:05	1.484.2.93.2.16
+++ loncom/interface/londocs.pm	2023/12/30 05:25:31	1.484.2.93.2.17
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Documents
 #
-# $Id: londocs.pm,v 1.484.2.93.2.16 2023/10/06 14:21:05 raeburn Exp $
+# $Id: londocs.pm,v 1.484.2.93.2.17 2023/12/30 05:25:31 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -4605,7 +4605,7 @@ END
                     $nomodal = 1;
                 }
 	    }
-            my ($checkencrypt,$shownurl);
+            my $checkencrypt;
             if (!$env{'request.role.adv'}) {
                 if (((&LONCAPA::map::getparameter($orderidx,'parameter_encrypturl'))[0]=~/^yes$/i) ||
                     ($isencrypted) || (&Apache::lonnet::EXT('resource.0.encrypturl',$symb) =~ /^yes$/i)) {
@@ -4625,7 +4625,7 @@ END
                 my $currenc = $env{'request.enc'};
                 $env{'request.enc'} = 1;
                 $shownsymb = &Apache::lonenc::encrypted($symb);
-                $shownurl = &Apache::lonenc::encrypted($url);
+                my $shownurl = &Apache::lonenc::encrypted($url);
                 if (&Apache::lonnet::symbverify($symb,$url)) {
                     $url = $shownurl;
                 } else {
@@ -4640,7 +4640,8 @@ END
                         $url = &Apache::lonnet::clutter($url);
                     }
                 }
-                $shownurl = $url;
+            } else {
+                $url = '';
             }
             unless ($env{'request.role.adv'}) {
                 if ((&LONCAPA::map::getparameter($orderidx,'parameter_hiddenresource'))[0]=~/^yes$/i) {
@@ -4651,8 +4652,8 @@ END
                     $hiddenres = 1;
                 }
             }
-            if ($url ne '') {
-                $url = $shownurl.(($shownurl=~/\?/)?'&':'?').'symb='.&escape($shownsymb);
+            if (($url ne '') && ($shownsymb ne '')) {
+                $url .= (($url=~/\?/)?'&':'?').'symb='.&escape($shownsymb);
             }
 	}
     } elsif ($supplementalflag) {