Index: openacs-4/packages/acs-tcl/tcl/text-html-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-tcl/tcl/text-html-procs.tcl,v
diff -u -r1.67.2.23 -r1.67.2.24
--- openacs-4/packages/acs-tcl/tcl/text-html-procs.tcl	15 Jan 2017 19:44:08 -0000	1.67.2.23
+++ openacs-4/packages/acs-tcl/tcl/text-html-procs.tcl	15 Jan 2017 19:54:59 -0000	1.67.2.24
@@ -868,9 +868,6 @@
         }
         return {}
     }
-
-    package require struct
-    package require htmlparse    
     
     ad_proc ad_dom_fix_html {
         -html:required
@@ -908,6 +905,13 @@
         @author Antonio Pisano
         
     } {
+        if {[catch {package require struct}]} {
+            error "Package struct non found on the system"
+        }
+        if {[catch {package require htmlparse}]} {
+            error "Package htmlparse non found on the system"
+        }
+        
         set tree [::struct::tree]