If you are installing FrontAccounting onto a shared server, you may have to set the session save path within FrontAccounting. At the top of  /includes/session.inc you will find this line : (what does the instruction means by You will find this LIne : what line.

Uncomment this line and set the path to a directory that exists on your server. Make sure that you have read/write privileges on this directory.

thank u in advance.