--- rat/lonuserstate.pm	2014/02/23 20:27:54	1.148
+++ rat/lonuserstate.pm	2018/03/29 20:10:47	1.149.2.1
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Construct and maintain state and binary representation of course for user
 #
-# $Id: lonuserstate.pm,v 1.148 2014/02/23 20:27:54 raeburn Exp $
+# $Id: lonuserstate.pm,v 1.149.2.1 2018/03/29 20:10:47 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -1072,7 +1072,7 @@ sub accinit {
 
 sub hiddenurls {
     my $randomoutentry='';
-    foreach my $rid (keys %randompick) {
+    foreach my $rid (keys(%randompick)) {
         my $rndpick=$randompick{$rid};
         my $mpc=$hash{'map_pc_'.$hash{'src_'.$rid}};
 # ------------------------------------------- put existing resources into array
@@ -1123,7 +1123,7 @@ sub hiddenurls {
         }
     }
 # ------------------------------ take care of explicitly hidden urls or folders
-    foreach my $rid (keys %hiddenurl) {
+    foreach my $rid (keys(%hiddenurl)) {
 	$hash{'randomout_'.$rid}=1;
 	my ($mapid,$resid)=split(/\./,$rid);
 	$randomoutentry.='&'.
@@ -1174,6 +1174,8 @@ sub readmap {
         &unlink_tmpfiles($fn);
     }
     undef %randompick;
+    undef %randompickseed;
+    undef %randomorder;
     undef %hiddenurl;
     undef %encurl;
     $retfrid='';
@@ -1317,6 +1319,8 @@ sub readmap {
             $lock=1;
         }
         undef %randompick;
+        undef %randompickseed;
+        undef %randomorder;
         undef %hiddenurl;
         undef %encurl;
         $errtext='';