Index: openacs-4/packages/xotcl-core/tcl/install-check-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xotcl-core/tcl/install-check-procs.tcl,v
diff -u -N -r1.5 -r1.5.2.1
--- openacs-4/packages/xotcl-core/tcl/install-check-procs.tcl	27 Oct 2014 16:42:01 -0000	1.5
+++ openacs-4/packages/xotcl-core/tcl/install-check-procs.tcl	27 Mar 2017 10:37:42 -0000	1.5.2.1
@@ -40,7 +40,7 @@
       } {
         if {[file exists $dir/$file]} {
           ns_log notice "Deleting obsolete file $dir/$file"
-          file delete $dir/$file
+          file delete -- $dir/$file
         }
       }
     }