Vladan,

Have you actaully deveolped a module using this method?  Not jsut a sample module.  The reason I ask is that the method you outlined in your tutorial appears to be the same method people are having issues with.  Please view my post here

http://www.dotnetnuke.com/Community/ForumsDotNetNuke/tabid/795/forumid/111/threadid/40609/scope/posts/Default.aspx

In this post I used the same control declaration you had.  When working with the module it seems that Visual Studio updates the designer file for some reason.  In my example I changed it back but mwilgar is saying that VS will change it back to the way it was before.

Bert