Index: openacs-4/packages/xowiki/tcl/xowiki-www-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/tcl/xowiki-www-procs.tcl,v
diff -u -N -r1.368.2.106 -r1.368.2.107
--- openacs-4/packages/xowiki/tcl/xowiki-www-procs.tcl	9 Jan 2022 17:23:26 -0000	1.368.2.106
+++ openacs-4/packages/xowiki/tcl/xowiki-www-procs.tcl	22 Jan 2022 18:10:05 -0000	1.368.2.107
@@ -729,12 +729,10 @@
     # with the proper delivery information.
     #
     set package_id [::xo::cc package_id]
-    ::$package_id set mime_type ${:mime_type}
     #
     # Use always ad_returnfile_background, it is clever enough to use
     # the right delivery mode in case of doubt.
     #
-    ::$package_id set delivery ad_returnfile_background
 
     if {[:exists_query_parameter filename]} {
       set fn [::xo::backslash_escape \" [:query_parameter filename]]
@@ -744,15 +742,24 @@
     set full_file_name [:full_file_name]
 
     if {![ad_file exists $full_file_name]} {
-      # This should not happen on a production system, however, it
-      # might on a test system that does not have a copy of the
-      # content-repository folder. We fail more gracefully in this
+      #
+      # This should not happen on a production system. In certain
+      # testing setups, a system admin might not have provided the
+      # full content repository.  We fail more gracefully in this
       # case.
-      ad_log Error "Could not read file $full_file_name. Maybe the content repository is (partially) missing?"
-      ns_returnnotfound
-      ad_script_abort
+      #
+      ad_log error "The file '$full_file_name' does not exist." \
+          "Maybe the content repository is (partially) missing?"
+
+      return [::${:package_id} error_msg -status_code 500 [subst {
+        No file for link <b>'[ns_quotehtml [ns_conn url]]'</b> available.<br>
+        Please report this to the web master of this site.
+      }]]
     }
 
+    ::$package_id set mime_type ${:mime_type}
+    ::$package_id set delivery ad_returnfile_background
+
     #:log "--F FILE=$full_file_name // ${:mime_type}"
 
     set geometry [::xo::cc query_parameter geometry ""]