fix error

updatefiles/application_helper.rb

@@ -226,6 +226,7 @@ module ApplicationHelper
 			def create_menu(items,level)
 				html = ""
 				items.each do |key,item|
+					next if  @menus_items[level].nil?
 					li = @menus_items[level].gsub("href_here",(item["url"] || ""))
 					li = li.gsub("{{link_name}}",(item["name"] || ""))
 					li = li.gsub("target_here",(item["target"] || ""))
@@ -238,8 +239,8 @@ module ApplicationHelper
 					end
 					html = html + li
 				end
-				html = @menus[level].gsub("{{here}}",html)
-				html = html.gsub("{{class_level}}",level.to_s)
+				html = @menus[level].to_s.gsub("{{here}}",html)
+				html = html.to_s.gsub("{{class_level}}",level.to_s)
 				html
 			end
 			h = create_menu(@items,0)