>I have specify the MemberClass as a page class and Memberclasslibrary to a vcx file.
>If I change the number of pages in the pageframe in design mode works fine. (add a new page from the class.) but if I drag and drop the page class into the pageframe I get an error message. "Cannot add a page object to this container........"

Francisko,

Yes that is right as the drag and drop is trying to add the page to a page. It is not possible to drag and drop onto the pageframe in the IDE, the drop occurs to the page.