Problem
Open a web site in Visual Studio .NET 2005. Select Website | ASP.NET Configuration. Browse to Security | Manage Access Rules. Add a rule if there aren't any; there must be at least one editable rule to see this bug. Click somewhere in the white space of an editable row of the grid. I get the event validation error shown below. Am I doing something wrong? Is this a bug? Is there a change I can make to my web site's code or to asp.netwebadminfiles to prevent this?
Error message:
An error was encountered. Please return to the previous page and try again. The following message may help in diagnosing the problem: Invalid postback or callback argument. Event validation is enabled using in configuration or in a page. For security purposes, this ...
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