Index: openacs-4/packages/acs-tcl/tcl/defs-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-tcl/tcl/defs-procs.tcl,v
diff -u -N -r1.70 -r1.71
--- openacs-4/packages/acs-tcl/tcl/defs-procs.tcl	21 Jan 2018 18:48:33 -0000	1.70
+++ openacs-4/packages/acs-tcl/tcl/defs-procs.tcl	3 Mar 2018 16:51:35 -0000	1.71
@@ -24,7 +24,9 @@
 
     @author Peter Marklund
 } {
-    return [util_memoize ad_acs_version_no_cache]
+    set key ::acs::version
+    if {[info exists $key]} {return [set $key]}
+    set $key [util_memoize ad_acs_version_no_cache]
 }
 
 ad_proc -public ad_acs_release_date {} {