Hi RahulVadhan,
Can you post the full error message?
What version CuteLiveSupport you are using? You can move the mouse over file "CuteChat.dll", it will show you the version number.
Just confirm it,have you put the license file "cutelivesupport.lic" to the correct place? The "Bin" folder which under the root of your site.
Can you post your support site url? So we can check it too.
Regards,
Ken