In my cpanel PDO-MYSQL is enabled and i m using core PHP. While selecting Integration type to Customized. It is asking all the details of server details.
When i m clicking on Proceed nothing is happening. Please help me out

No i m not getting a blank page
It is staying on the same page..

Read the below post ,
http://codologic.com/page/node/652

thanks for reply. There was problem in the permission of the files. I have installed successfully but now the problem is that it shows me Fetching...user data kindly wait. Could you please tell me that if there is a permission problem for this or it is other problem. If it is permission problem then please tell me which file i have to configure permission as all the files are having permission of 777

Open chrome console , and click on network tab , click on any requests made by freichat , then click on the response for that request .

If you see any errors in the response , please post them here .