I'm assuming not (as I can open those in designer view with no problem in VS 2003).
I'm also assuming you copied a file and tried to open it after copying it... you'll need to change the reference at the top in code view first. It'll refer to the original code behind file you copied.
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http://www.the-pork.net ... highly customized version of InstantForum.
Have you changed anything in that file?
I had a problem before where I added something and forgot to close it...
i.e.
Which should be
Normally the Design View will tell you what line there is a problem though.. it's not doing that for you? --
It should be:
<%@ Control Language="vb" %> <%@ Control Language="vb" %><% @Register tagPrefix="InstantASP" Namespace="InstantASP.Common.UI.WebControls" Assembly="InstantASP.Common.UI" %><% @Register tagPrefix="InstantASP" Namespace="InstantASP.Common.UI.WebControls" Assembly="InstantASP.Common.UI" %> --