--- loncom/interface/coursecatalog.pm	2008/01/12 22:32:04	1.25
+++ loncom/interface/coursecatalog.pm	2008/02/15 02:30:14	1.26
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Handler for displaying the course catalog interface
 #
-# $Id: coursecatalog.pm,v 1.25 2008/01/12 22:32:04 raeburn Exp $
+# $Id: coursecatalog.pm,v 1.26 2008/02/15 02:30:14 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -231,8 +231,10 @@ function setCourseId(caller) {
             $r->print(&mt('<b>Choose which course(s) to list.</b><br />'));
             $r->print('<table><tr>');
             for (my $k=0; $k<$lasttitle-1; $k++) {
-                my @unsorted = @{$cat_items{$codetitles[$k]}};
-                my @items;
+                my (@items,@unsorted);
+                if (ref($cat_items{$codetitles[$k]}) eq 'ARRAY') {
+                    @unsorted = @{$cat_items{$codetitles[$k]}};
+                }
                 &Apache::courseclassifier::sort_cats($k,\%cat_order,\@codetitles,\@unsorted,\@items);
                 my @longitems;
                 if (defined($cat_titles{$codetitles[$k]})) {