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 -r1.68.2.7 -r1.68.2.8
--- openacs-4/packages/xotcl-core/tcl/bgdelivery-procs.tcl	4 Jul 2019 18:09:42 -0000	1.68.2.7
+++ openacs-4/packages/xotcl-core/tcl/bgdelivery-procs.tcl	18 Jul 2019 14:23:05 -0000	1.68.2.8
@@ -750,6 +750,9 @@
 
   } {
     if {$query eq ""} {
+      if {![:isobject ::xo::cc]} {
+        ::xo::ConnectionContext require
+      }
       set query [::xo::cc actual_query]
     }
     set use_h264 [expr {[string match "video/mp4*" $mime_type] && $query ne ""