Clear Cache After Switch Theme
When you switch theme, you might ask for the entire cache to be cleared.
In this case, you need to add the following lines to the wp-config.php file because this feature is not automatically activated. You have to activate it manually.
You need to add the following lines after <?php which exists at the top of wp-config.php file.
define("WPFC_CLEAR_CACHE_AFTER_SWITCH_THEME", true);