Index: openacs-4/packages/acs-content-repository/www/admin/mime-types/index.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-content-repository/www/admin/mime-types/index.tcl,v
diff -u -r1.2.2.1 -r1.2.2.2
--- openacs-4/packages/acs-content-repository/www/admin/mime-types/index.tcl	10 Sep 2015 08:21:19 -0000	1.2.2.1
+++ openacs-4/packages/acs-content-repository/www/admin/mime-types/index.tcl	20 May 2016 18:35:40 -0000	1.2.2.2
@@ -6,7 +6,7 @@
 
 } {
     { extension_p:boolean 0 }
-    { orderby "mime_type" }
+    { orderby:token "mime_type" }
 }
 
 set return_url [export_vars -base "index" {extension_p orderby}]
Index: openacs-4/packages/acs-content-repository/www/admin/mime-types/map.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-content-repository/www/admin/mime-types/map.tcl,v
diff -u -r1.1.6.1 -r1.1.6.2
--- openacs-4/packages/acs-content-repository/www/admin/mime-types/map.tcl	10 Sep 2015 08:21:19 -0000	1.1.6.1
+++ openacs-4/packages/acs-content-repository/www/admin/mime-types/map.tcl	20 May 2016 18:35:40 -0000	1.1.6.2
@@ -6,7 +6,7 @@
 
 } {
     mime_type:notnull
-    {return_url ""}
+    {return_url:return_url ""}
 }
 
 set doc(title) "Add an extension"
Index: openacs-4/packages/acs-content-repository/www/admin/mime-types/new.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-content-repository/www/admin/mime-types/new.tcl,v
diff -u -r1.1.6.1 -r1.1.6.2
--- openacs-4/packages/acs-content-repository/www/admin/mime-types/new.tcl	10 Sep 2015 08:21:19 -0000	1.1.6.1
+++ openacs-4/packages/acs-content-repository/www/admin/mime-types/new.tcl	20 May 2016 18:35:40 -0000	1.1.6.2
@@ -5,7 +5,7 @@
     @cvs-id $Id$
 
 } {
-    {return_url ""}
+    {return_url:return_url ""}
 }
 
 set doc(title) "Create a new MIME Type"
Index: openacs-4/packages/acs-content-repository/www/admin/mime-types/unmap.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-content-repository/www/admin/mime-types/unmap.tcl,v
diff -u -r1.1.6.1 -r1.1.6.2
--- openacs-4/packages/acs-content-repository/www/admin/mime-types/unmap.tcl	10 Sep 2015 08:21:20 -0000	1.1.6.1
+++ openacs-4/packages/acs-content-repository/www/admin/mime-types/unmap.tcl	20 May 2016 18:35:40 -0000	1.1.6.2
@@ -7,7 +7,7 @@
 } {
     extension:notnull
     mime_type:notnull
-    {return_url ""}
+    {return_url:return_url ""}
 }
 
 if { $return_url eq "" } {