I am getting the same error on a details view in edit mode.  I am using MS Visual Studio Professional.  Has a solution been found for this problem?

The relevant source code looks something like this:

<%@ Register Assembly="CuteEditor" Namespace="CuteEditor" TagPrefix="CE" %>

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                <asp:TemplateField HeaderText="Content:" SortExpression="Content">
                    <EditItemTemplate>
                        <CE:Editor ID="ceContent" runat="server" AutoConfigure="Simple" AutoParseClasses="True"
                            CodeViewTemplateItemList="Save,Print,Cut,Copy,Paste,Find,ToFullPage,FromFullPage,SelectAll,SelectNone"
                            MaxHTMLLength="0" MaxTextLength="0" Text='<%# Bind("Content") %>' Width="600px" BreakElement="P">
                            <FrameStyle BackColor="White" BorderColor="#DDDDDD" BorderStyle="Solid" BorderWidth="1px"
                                CssClass="CuteEditorFrame" Height="100%" Width="100%" />
                        </CE:Editor>
                    </EditItemTemplate>
                    <HeaderStyle VerticalAlign="Top" />
                </asp:TemplateField>