Updated.

app/controllers/admin/patchfiles_controller.rb

@@ -53,7 +53,7 @@ class Admin::PatchfilesController < OrbitAdminController
       check_url_ids = Page.where(:url=>check_url,:parent_page_id=>home_page.id).desc(:id).to_a
       check_url_ids[1..-1].each{|uniq_page| uniq_page.destroy}
     end
-    render :text => 'repair finish'
+    render :plain => 'repair finish'
   end
   def index
     #@tags = @module_app.tags
@@ -116,15 +116,8 @@ class Admin::PatchfilesController < OrbitAdminController
           @file_name = @file.original_filename
           @file_content = @file.read
           @file_content.force_encoding('UTF-8')
-          Dir.chdir(@file_path) do
-            @filetowrite
-            if !File.file?(@file_name)
-              @filetowrite = File.new(@file_name,"w")
-            else
-              @filetowrite = File.open(@file_name,"w")
-            end
-            @filetowrite.write(@file_content)
-            @filetowrite.close
+          File.open("#{@file_path}/#{@file_name}","w+") do |f|
+            f.write(@file_content)
           end
         else
           @file_name = @font_settings.font_file_name