I\'ve a user control which contains asp:Literal.
Thanks, TheVillageIdiot, for posting the answer to your problem - I ran into exactly the same misunderstanding.
Adding controls via
in the web.config was not enough to actually use it! I tried it like this on a page:
... but this would lead to the phenomenon, that none of the controls inside the UserControl were initialized. Only adding
<%@ Register Src="~/UserControlsAccount/LoginMessages.ascx" TagPrefix="user" TagName="Messages" %>
to the top of the page solved the problem :-)
Thanks again!