making a container control visible

I have a container control that I am embedding on a window at run time. The container is supposed to become visible during the mouse enter event on the window, but when I go to run the program I am getting a “This item does not exist” error. Any clues?

Is this the same control this having the Left problem from the other thread?

Sure is Greg. Its almost as if the IDE doesn’t realise the container control I have created exists.

If you be so kind to post the code you are using to embed the container control and where it is (which event of WebPage or control), and where is the code that tries to render the container control visible (supposedly WebPage.MouseEnter), that would help a great deal.