Dear myersjosh,
Please follow steps:
1. clear cache
2. close all ie winodw
3. save the following code to test.aspx
<%@ Page Language="C#"%>
<%@ Register TagPrefix="CE" Namespace="CuteEditor" Assembly="CuteEditor" %>
<html>
<body>
<form id="Form1" runat="server">
<table cellpadding="15">
<tr>
<td>
<CE:Editor id="Editor1" runat="server" Height="200" ></CE:Editor><br>
</td>
</tr>
</table>
</form>
</body>
</html>
4. open new ie window and run test.aspx, can you reproduce this issue?
Keep us posted.
Regards,
Eric