I am getting a fatal error on my website. I am using magento 1.8 version. Can anybody let me know what is the cause of it.
Are you using a new magento installation or installing already running site?
It's look like it is a already running site,which you are unable to configure on your machine or server.
There are some module in community codepool which are causing problem. You have to check the site after disabling them.
There may be a possibility that compilation mode is on. You have to check this, if it is on then disable it.
To disable compilation Go to root folder includes/config.php and comment every thing. clear cache and the try to run you store by hitting home page URL.