cannot open form design view

I am having a strange problem with Visual Studio.NET. I am
working on a C# project with two forms. I did not open the
project for a couple of weeks, and now when I open it up,
the 'Design View' of one of the forms will not open. It has
the following error: "An error occurred while loading the
document. Fix the error, and then try loading the document
again. The error message follows: Duplicate declaration of
member 'Location'.

It does not specify where specifically this duplicate
declaration is occurring, or what object it is related to.
Also, building and running the project works without a
hitch, so there are no debugging errors to work off of. Any
suggestions as to where this bug might be? Or is it a
VS.NET bug?

Many thanks,
Jason
..