Index: openacs-4/packages/acs-tcl/tcl/00-icanuse-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-tcl/tcl/Attic/00-icanuse-procs.tcl,v
diff -u -N -r1.1.2.11 -r1.1.2.12
--- openacs-4/packages/acs-tcl/tcl/00-icanuse-procs.tcl	23 Jul 2020 11:58:47 -0000	1.1.2.11
+++ openacs-4/packages/acs-tcl/tcl/00-icanuse-procs.tcl	6 Aug 2020 13:01:21 -0000	1.1.2.12
@@ -6,6 +6,13 @@
     @author Gustaf Neumann
 }
 
+if {[info commands ::try] eq ""} {
+    package require try
+    ns_log warning "*******************************************"
+    ns_log warning "* This version of OpenACS requires Tcl 8.6"
+    ns_log warning "*******************************************"
+}
+
 namespace eval ::acs {
     ad_proc -public icanuse {feature} {