IE "Done,but errors on page" XHTML error on<asp:Content>

[anthonymeluso]

Working on a site that is using Master Pages. When the page loads in FireFox everythings looks good. However in IE (6 or 7) I got an warning icon on the bottom left of the browser window.

I look at the error detials and it tells me its line two of the code which is this:

<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">

I'm using MS Expression Web to design these pages and in that program under compatibility checker it mentions line two has an error as well. That error is:

In XHTML 1.0 Transitional the tag <asp:Content> is not permitted.

Looking at the FireFox error console I get zero page errors.

What is up with IE and this <asp:Content> tag problem??

Thanks in advance!

 

[anthonymeluso]

Oh I forgot the fun part.

When the page is refreshed the warning icon goes away and the page is now error free.

Thanks again!

 

[anthonymeluso]

Any see this type of problem before with ASP.NET?