I have seen forum inquiries about this issue. However, when I comment out the reference to the plugins/zip/plugin.asp file, I get another error.
It was not possible to properly load the XML response from the web server.
Raw response from the server:
Active Server Pages error 'ASP 0126'
Include file not found
/ckeditor/ckfinder/config.asp, line 318
The include file 'plugins/zip/plugin.asp' was not found.