Index: stringscan.rb
==================================================================
--- stringscan.rb
+++ stringscan.rb
@@ -1,28 +1,25 @@
 #Stringscan: grep-like tool, written in Ruby-Tk. (c) 2017 Kevin Walzer/WordTech Communications LLC. License: MIT license.
 #encoding: UTF-8
 
 
 require 'tk'
+#find additional Tcl libraries
+Tk::AUTO_PATH.list <<= File.dirname(__FILE__)
 require_relative 'tkballoonhelp'  
 require 'tkextlib/tile'
 require 'find'
 require 'tkextlib/tcllib/tablelist_tile'
 require 'mime/types'
-require 'tk/tk_mac'
 require 'tkextlib/tkDND'
 
 $platform = Tk.windowingsystem
-
-#find additional Tcl libraries
-Tk::AUTO_PATH.list <<= File.dirname(__FILE__)
-
-
 
 if $platform == 'aqua'
 	TkPackage.require('windowlist')
 	TkPackage.require('fullscreen')
+	require 'tk/tk_mac'
 end
 TkPackage.require('regproc')
 TkPackage.require('machelp')
 TkPackage.require('softwareupdate')
 TkPackage.require('xplat')
@@ -130,11 +127,13 @@
 	Tk::TkDND::DND
 	$root = TkRoot.new {
 		title "Stringscan"
 	}
 	
-	Tk.tk_call('fullscreen::fullscreen', $root)
+	if $platform == 'aqua'
+		Tk.tk_call('fullscreen::fullscreen', $root)
+	end
 	
 	#menu
 	$menubar = TkMenu.new($root)
 	TkOption.add '*tearOff', 0
 	if $platform == 'aqua'