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:
Input string was not in a correct format.
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: {