I got the following error when i tried to activate the Optin Revolution plugin for the first time...
Warning: session_start() [function.session-start]: SAFE MODE Restriction in effect. The script whose uid is 1835 is not allowed to access /tmp owned by uid 0 in /home/lesunshi/public_html/wp-content/plugins/optin-revolution/optinrev.php on line 18
Fatal error: session_start() [function.session-start]: Failed to initialize storage module: files (path: ) in /home/lesunshi/public_html/wp-content/plugins/optin-revolution/optinrev.php on line 18