Index: openacs-4/packages/acs-bootstrap-installer/installer.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-bootstrap-installer/installer.tcl,v
diff -u -r1.25.2.6 -r1.25.2.7
--- openacs-4/packages/acs-bootstrap-installer/installer.tcl	20 Dec 2016 11:16:46 -0000	1.25.2.6
+++ openacs-4/packages/acs-bootstrap-installer/installer.tcl	3 Jun 2017 12:17:17 -0000	1.25.2.7
@@ -351,12 +351,7 @@
     Returns 1 if the ACS is running under Windows.
     Note,  this procedure is a best guess, not sure of a better way of determining:
 } {
-    set thisplatform [ns_info platform]
-    if {$thisplatform eq "win32"} {
-        return 1
-    } else {
-        return 0
-    }
+    return [expr {[ns_info platform] in {win32 win64}}]
 }
 
 ad_proc -private install_load_errors_formatted {errorVarName} {