In Default.aspx, I decided to add another image to the page. So, it looks like this:

<CENTER>
<asp:Image ID="Image4" runat="server" ImageUrl="images/WeeklyStreamingVideo.gif" width="400" height="37" />
</CENTER>

This image exists. Because when I run the page, the image appears. But, the interface keeps putting a red line under the ImageUrl reference saying that the file does not exist. Anyone would know what I could try to make this go away?