Chris:
It's seems that , you haven't write the classes for your site .
for example , the classes :
Public Class YourDataProvider
Inherits CuteSoft.Chat.DataProvider
Public Class YourUserAdapter
Inherits CuteSoft.Chat.UserAdapter
You could download the cutechat2 for dnn , and check the code in DotNetNuke\Web\DesktopModules\CuteChatControls\
It's a sample of how to write these classes for the CuteChat2.
Regards , Terry .