I put this into the global file

 

      Try
          Return theuser.DisplayName.ToString()
      Catch e As Exception 
          Return theuser.UserID.ToString()
      End Try

 Also turned on debug mode in CH_MainForm.aspx

 

I got the follwing error:

 

 

 

Line 16: LocationId=Request.QueryString["LocationId"];
Line 17: Location=Request.QueryString["Location"];
Line 18: SkinName="Skins/"+ CuteSoft.Chat.ChatWebUtility.SkinName + "/style.css";
Line 19: if(ChatWebUtility.IsDownLevelBrowser)
Line 20: {