Can you try the following code?
<%@ Register TagPrefix="CE" Namespace="CuteEditor" Assembly="CuteEditor" %>
<%@ Page language="c#"%>
<html><head></head><body><form id="Form1" method="post" runat="server">
<CE:EDITOR id="Editor1" Autoconfigure="Simple" runat="server"></CE:EDITOR>
</form></body></html>
If you cannot reproduce this issue in this example, can you post some code showing the problems?
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