Custom menu is not displayed on blog page after upgrading wordpress manually

I recently updated my site, upgraded from wp version 3.4.2 to 3.5.1 and also did with Avada theme. This 2 updates where made manually as my GoDaddy hosting didn\’t allow me to did it automatically.

Everything works fine, except my blog page where menu doesn\’t appear on header .

In addition, I had made some customization on header.php of my theme, reverted and still header only contains logo image.

Need to fix this urgently. I may make some mistakes after upgrate as I have a testing site which I installed from scratch and It\’s working just fine.

Here is my blog page url: https://arandasoft.com/knowledgebase/

Thanks!