Dear spencet,

 

Please use the following code and test it again:

 

<CE:Editor id="Editor1" runat="server" Width="400" Height="300" AutoConfigure="None" ShowHtmlMode="false" ShowPreviewMode="false" EnableContextMenu="false" ShowGroupMenuImage="False" ShowBottomBar="false" BackColor="White" BorderColor="White"  URLType="SiteRelative"></CE:Editor>

 

Regards,

Eric