Erie Huang

hi i also can not actived w3 totcal cache after last update..
its triggered a fatal error.

Fatal error: Uncaught exception ‘FileOperationException’ with message ‘/home/saynot8/public_html/wp-content/w3tc-config/master.php could not be created, please run following command:

• <strong style=”color: #f00;”>chmod 777 /home/saynot8/public_html/wp-content/cache/tmp
• <strong style=”color: #f00;”>chmod 777 /home/saynot8/public_html/wp-content/w3tc-config

‘ in /home/saynot8/public_html/wp-content/plugins/w3-total-cache/inc/functions/activation.php:127 Stack trace: #0 /home/saynot8/public_html/wp-content/plugins/w3-total-cache/lib/W3/ConfigWriter.php(159): w3_throw_on_write_error(‘/home/saynot8/p…’, Array) #1 /home/saynot8/public_html/wp-content/plugins/w3-total-cache/lib/W3/Config.php(71): W3_ConfigWriter->save() #2 /home/saynot8/public_html/wp-content/plugins/w3-total-cache/lib/W3/CloudFlare.php(174): W3_Config->save() #3 /home/saynot8/public_html/wp-content/plugins/w3-total-cache/lib/W3/Plugin/CloudFlare.php(52): W3_CloudFlare->update_ip_ranges() #4 /home/sayn in /home/saynot8/public_html/wp-content/plugins/w3-total-cache/inc/functions/activation.php on line 127

how can i solve this problem and reactive total cache?
thanks