I have noticed that when Cute Editor is rendered the HTML width and height attributes are invalid HTML:

 

The following:

<table width="667px" height="308px" cellspacing="0" cellpadding="0" _IsCuteEditor="True" id="CE_Editor_ID" blah, blah, blah

 

Should be:

<table width="667" height="308" cellspacing="0" cellpadding="0" _IsCuteEditor="True" id="CE_Editor_ID" blah, blah, blah

 

This problem is also present on http://www.richtextbox.com/vb/