We find out that current version of Magento AW Blog extension is not compatible with J2T AJAXCART LITE module.
When both modules are installed the page gives 503 error, due to the failed PHP code compilation:
PHP Fatal error: Call to a member function addLink() on a non-object in app/code/community/AW/Blog/Block/Blog.php on line 196
Since addLink() function is called from addTopLink() function only to solve this issue you can just disable Add Blog link to the top option in AW Blog options in Magento Backend.
