Index: openacs-4/packages/file-storage/www/index.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/file-storage/www/index.tcl,v
diff -u -r1.30.6.6 -r1.30.6.7
--- openacs-4/packages/file-storage/www/index.tcl	11 Oct 2013 18:22:25 -0000	1.30.6.6
+++ openacs-4/packages/file-storage/www/index.tcl	5 Aug 2014 17:46:33 -0000	1.30.6.7
@@ -6,10 +6,10 @@
     @creation-date 6 Nov 2000
     @cvs-id $Id$
 } {
-    {folder_id:integer [fs_get_root_folder]}
+    {folder_id:naturalnum,notnull [fs_get_root_folder]}
     {n_past_days:integer "99999"}
     {orderby:optional}
-    {category_id:integer ""}
+    {category_id:naturalnum ""}
     {return_url ""}
 } -validate {
     valid_folder -requires {folder_id:integer} {