Error Creating Control in Visual Studio

I have created a custom VB Control and host under a ASP page. The code works fine. However, when I go to Design page of the ASPX page under Visual Studio, the control displays a errror. Why does it happen and is there a way to get rid of this ?

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Bob LearnedConnect With a Mentor Commented:
Sometimes this is a problem when you don't Rebuild the WebSite, and sometimes it is a problem with the IDE just getting stupid...
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