Index: openacs-4/packages/xotcl-core/tcl/bgdelivery-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xotcl-core/tcl/bgdelivery-procs.tcl,v
diff -u -r1.46 -r1.47
--- openacs-4/packages/xotcl-core/tcl/bgdelivery-procs.tcl	21 Feb 2013 12:31:33 -0000	1.46
+++ openacs-4/packages/xotcl-core/tcl/bgdelivery-procs.tcl	21 Mar 2013 21:58:05 -0000	1.47
@@ -525,8 +525,13 @@
   set use_h264 [expr {[string match video/mp4* $mime_type] && $query ne "" 
                       && ([string match {*start=[1-9]*} $query] || [string match {*end=[1-9]*} $query])
                       && [info command h264open] ne ""}]
-  set use_writerThread [ns_config ns/server/[ns_info server]/module/nssock writerthreads 0]
 
+  if {[info command ns_driversection] ne ""} {
+      set use_writerThread [ns_config [ns_driversection] writerthreads 0]
+  } else {
+      set use_writerThread 0
+  }
+
   if {[info exists content_disposition]} {
     set fn [xo::backslash_escape \" $content_disposition]
     ns_set put [ns_conn outputheaders] Content-Disposition "attachment;filename=\"$fn\""