Has anyone run into the problem of having a web-page lose all content area display in Design View? Using VS 2010 SP1 and a design with multiple master pages, a web-page based on a master page that itself is based on another master page, will lose all content area display in design view using a split screen mode when changes have been in the source view then clicking on the sync source and design view dialog. The web-page content area can still be displayed just fine using the "view in Browser" option (as long as the code view has methods for all events described in the source view).
Whenever a web-page is based on a single master page, there is no problem with Design View of the Content area. This only occurs when using a master page that is based on another master page.
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