Here is an error message I get when using CuteEditor on localhost. What am I doing wrong?

Error Type: Server object, ASP 0177 (0x800401F3) Invalid class string /pyro/CuteEditor_Files/include_CuteEditor.asp, line 969

using:
 <%
Dim editor
Set editor = New CuteEditor
editor.ID = "content"
editor.Text = contentValue
editor.AutoConfigure = "Custom"
editor.Draw()
%>
The same happens without the AutoConfigure line.

The strangest part is it was working quite well just yesterday and the only thing I changed was my CSS file so that it wouldn't mess with the layout of the cuteEditor textarea.