W3TC

Gives a fatal error on activation:
Fatal error: Uncaught exception ‘FileOperationException’ with message ‘/home1/xxxxxxx/public_html/wp-content/w3tc-config/master.php could not be created, please run following command:

• <strong style=”color: #f00;”>chmod 777 /home1/xxxxxxx/public_html/wp-content/cache/tmp
• <strong style=”color: #f00;”>chmod 777 /home1/xxxxxxx/public_html/wp-content/w3tc-config

‘ in /home1/xxxxxxx/public_html/wp-content/plugins/w3-total-cache/inc/functions/activation.php:127 Stack trace: #0 /home1/xxxxxxx/public_html/wp-content/plugins/w3-total-cache/lib/W3/ConfigWriter.php(159): w3_throw_on_write_error(‘/home1/xxxxxxx…’, Array) #1 /home1/xxxxxxx/public_html/wp-content/plugins/w3-total-cache/lib/W3/Config.php(71): W3_ConfigWriter->save() #2 /home1/xxxxxxx/public_html/wp-content/plugins/w3-total-cache/lib/W3/CloudFlare.php(174): W3_Config->save() #3 /home1/xxxxxxx/public_html/wp-content/plugins/w3-total-cache/lib/W3/Plugin/CloudFlare.php(52): W3_CloudFlare->update_ip_ranges in /home1/xxxxxxx/public_html/wp-content/plugins/w3-total-cache/inc/functions/activation.php on line 127

http://wordpress.org/extend/plugins/w3-total-cache/