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 -r1.34 -r1.35
--- openacs-4/packages/xotcl-core/tcl/bgdelivery-procs.tcl	17 Mar 2011 08:21:19 -0000	1.34
+++ openacs-4/packages/xotcl-core/tcl/bgdelivery-procs.tcl	9 May 2011 09:06:25 -0000	1.35
@@ -448,6 +448,8 @@
     # Tcl behaves different, when one tries to send 0 bytes via
     # file_copy. So, we handle this special case here...
     # There is actualy nothing to deliver....
+    ns_set put [ns_conn outputheaders] "Content-Length" 0
+    ns_return 200 text/plain {}
     return
   }