Fix bug.

template_generator/app/helpers/admin/plugin_templates_helper.rb

@@ -7,6 +7,7 @@ module Admin::PluginTemplatesHelper
   end
   def time_iterate(start_time, end_time, step, &block)
     begin
+      start_time = start_time.to_date if end_time.class == Date
       yield(start_time)
     end while (start_time += step) <= end_time
   end