When you initially open the program you will see the screen below:
You can set default value of Web service Url by editng LiveSupport.exe.config file.
<add key="CuteChatServiceUrlBase" value="
http://yoursite.com"/>
If the Web service Url you entered doesn't match the exact location of CuteSoft_client folder, you will get this error.
For example, if your site name is abc.com and you upload CuteSoft_client folder to the root of your web site, the value of Web service Url should be:
http://abc.com.
Hope it helps.
It not, please let me know your configuration.
asp.net Chat http://cutesoft.net/ASP.NET+Chat/default.aspx
Web Messenger: http://cutesoft.net/Web-Messenger/default.aspx
asp.net wysiwyg editor: http://cutesoft.net/ASP.NET+WYSIWYG+Editor/default.aspx
asp wysiwyg html editor: http://cutesoft.net/ASP
asp.net Image Gallery: http://cutesoft.net/ASP.NET+Image+Gallery/default.aspx
Live Support: http://cutesoft.net/live-support/default.aspx