Index: scilab-5.3.3/modules/core/macros/add_demo.sci
===================================================================
--- scilab-5.3.3.orig/modules/core/macros/add_demo.sci	2011-07-20 10:15:44.000000000 +0200
+++ scilab-5.3.3/modules/core/macros/add_demo.sci	2011-12-28 11:37:08.843559856 +0100
@@ -18,7 +18,7 @@
   path=pathconvert(path,%f,%t);
   
   if ~isfile(path) then
-    error(msprintf(gettext("%s: The file %s does not exist.\n"),"add_demo",path));
+    warning(msprintf(gettext("Demos are not available. Please install the package scilab-doc\n")));
   end
   
   if isdir(path) then