Problem

After Koongo Connector installation the main Magento menu may disappear. This happens when you installed some 3rd party modules overwriting the same core class.

Solution

The problem lies in overwriting of the core block called Mage_Adminhtml_Block_Page_Menu. You need to disable the overwriting rule by commenting out the line number 250 in app/code/community/Nostress/Nscexport/etc/config.xml:

...
<rewrite>
  <catalog_category_tab_attributes>Nostress_Nscexport_Block_Adminhtml_Catalog_Category_Tab_Attributes</catalog_category_tab_attributes>					
  <!-- <page_menu>Nostress_Nscexport_Block_Adminhtml_Page_Menu</page_menu> --> // LINE 250
</rewrite>
...

Related articles