Piwik # Web Analytics

Error: Unable to start session. Please check that the web server has enough permission to write to these files/directories:
For example, on a Linux server if your Apache httpd user is www-data, you can try to execute:
chown -R www-data:www-data /mnt/web4/c0/20/5271620/htdocs/Piwik_01/tmp/sessions/
chmod -R 0755 /mnt/web4/c0/20/5271620/htdocs/Piwik_01/tmp/sessions/

Debug: the original error was 
Zend_Session::start() - /mnt/web4/c0/20/5271620/htdocs/Piwik_01/libs/Zend/Session.php(Line:469): Error #2 session_start(): open(/mnt/web4/c0/20/5271620/htdocs/Piwik_01/tmp/sessions/sess_6sn6n937ob3hkebodu4vckeas1, O_RDWR) failed: Interrupted system call (4) Array

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