Hello,
I am not able to activate the W3 Total Cache plugin, as soon as I click the activate button, it fails displaying the following error:
PHP Fatal error: Call to undefined function is_network_admin() in /path_to_domain/wp-content/plugins/w3-total-cache/lib/W3/Plugin/TotalCacheAdmin.php
Anyone knows how to fix this error??
This plugin seems to be a great one!!
Thanks in advance,