Hi manoju86,
Which package you are using? Can you show me the download url?
If you want to test the CuteChatAndMessenger demo, please download the demo here http://www.cutesoft.net/downloads/folders/21915/download.aspx
CuteChatAndMessengerForSharePoint.dll only use with the Microsoft SharePoint. If you are not using the SharePoint, please do not use the CuteChatAndMessenger for SharePoint integration package.
Regards,
Ken