[Serusers] sorry -- cannot open write fifo

Hi I have installed latest version of SER. I have been getting this error message "sorry -- cannot open write fifo" . There is a permission on the FIFO for httpd process to read and write. But still I am getting error. Any pointers for to resolve this will be helpful. Can any one help please. Thanks Rama DISCLAIMER: This email (including any attachments) is intended for the sole use of the intended recipient/s and may contain material that is CONFIDENTIAL AND PRIVATE COMPANY INFORMATION. Any review or reliance by others or copying or distribution or forwarding of any or all of the contents in this message is STRICTLY PROHIBITED. If you are not the intended recipient, please contact the sender by email and delete all copies; your cooperation in this regard is appreciated.