I, of course, don't have problems with the example in the link you provided, because it's running on your server, not mine, and the application running on my server is the one having the problem.

I don't know what you mean by "examples included in the download package".

I also don't know what exactly you're asking from me when you say "can you create a sample project showing the problems and send it to me".

I have given you the exact error message I'm getting and the exact statement on which the error occurs.  I don't know what else you need.  I can send you the .aspx document that is generating the error.  FWIW, I put your Editor control onto another test page in my application, on my server, and it loaded with no difficulty.