Index: openacs-4/packages/acs-admin/www/install/install-2.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-admin/www/install/install-2.tcl,v
diff -u -r1.2 -r1.2.10.1
--- openacs-4/packages/acs-admin/www/install/install-2.tcl	10 Jan 2007 21:22:00 -0000	1.2
+++ openacs-4/packages/acs-admin/www/install/install-2.tcl	2 Oct 2013 08:56:25 -0000	1.2.10.1
@@ -63,7 +63,7 @@
 multirow create install package_key version_name package_name comment extra_p
 
 foreach key $result(packages) {
-    set extra_p [expr {[lsearch $package_key $key] == -1}]
+    set extra_p [expr {$key ni $package_key}]
     if { $extra_p } {
         set extras_p 1
     }