Magento REMOVE CACHE INVALIDATION ERROR(THOUGH IT'S NOT A BUG ;))

YOU HAVE TO PUT CACHE CLEAR CODE SOME WHERE IN ADMIN PHTML FILE.

i put that code in head.phtml

file:

head.phtml

path:

app/design/adminhtml/default/default/template/page

<?php

 try {

      Mage::app()->getCacheInstance()->cleanType('block_html');

  } catch (Exception $e) {

    // do something

    error_log($e->getMessage());

  }

 ?>