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 -N -r1.66 -r1.67
--- openacs-4/packages/xotcl-core/tcl/bgdelivery-procs.tcl	16 Nov 2018 18:03:35 -0000	1.66
+++ openacs-4/packages/xotcl-core/tcl/bgdelivery-procs.tcl	16 Nov 2018 18:10:17 -0000	1.67
@@ -358,6 +358,9 @@
       # client (e.g. browser) closed the connection. This is not a
       # real error.
       throw {CLIENTDISCONNECT} {client disconnected}
+    } on error {errorMsg} {
+      ns_log warning "subscriber send $::errorCode <$errorMsg>"
+      throw $::errorCode $errorMsg
     }
   }